Secondary Infertility: When Baby Number Two Will Not Come

You already have a child. Maybe you conceived easily the first time, or maybe it took some effort, but either way, you got there. Now you want another baby, and it is not happening. Month after month, you are met with disappointment.

Secondary infertility, the inability to conceive or carry a pregnancy to term after previously having a child, comes with its own particular kind of pain. You might feel like you do not deserve to grieve because you already have a child. You might feel guilty for wanting more when so many people struggle to have even one. You might feel confused about why your body is not cooperating when it worked before.

We want you to know that your struggle is real and valid. Secondary infertility is surprisingly common, and the emotions that come with it are no less significant because you already have a child. This guide will help you understand why secondary infertility happens, when to seek help, and what options are available.

What Is Secondary Infertility?

Secondary infertility is defined as the inability to conceive or carry a pregnancy to term after previously giving birth. The standard timeline applies: if you have been trying for 12 months without success (or 6 months if you are over 35), you meet the criteria.

Secondary infertility is actually as common as primary infertility (infertility in people who have never had a child). Approximately 50 percent of infertility cases are secondary infertility.

Why Does This Happen?

If you conceived before, why is it not happening now? Several factors may have changed since your last pregnancy.

Age

This is the most significant factor for many couples experiencing secondary infertility. Even a few years can make a meaningful difference, particularly for women in their mid-30s and beyond.

If you had your first child at 32 and are now trying at 36, your fertility has declined during those four years. Egg quality decreases with age, and the decline accelerates in the mid-to-late 30s.

Your partner's age matters too, though male fertility declines more gradually.

Changes in Health

Health conditions that have developed since your last pregnancy can affect fertility. For a comprehensive overview of conditions that impact fertility, see our fertility conditions guide.

For Women

New or worsening endometriosis can affect fertility over time. PCOS symptoms may have changed. Fibroids or polyps may have developed. Thyroid conditions can emerge. Weight changes in either direction can affect ovulation. Surgical complications from previous delivery, particularly cesarean section, can sometimes cause scarring.

For Men

Sperm quality can decline due to age, health conditions, lifestyle changes, or new medications. Varicoceles can develop or worsen. Testosterone levels naturally decline with age.

Complications from Previous Pregnancy or Delivery

Sometimes the previous pregnancy or delivery itself contributes to secondary infertility.

Cesarean sections can occasionally cause scarring in the uterus. Uterine infections after delivery can lead to adhesions (Asherman syndrome). Retained placental tissue can cause ongoing issues.

Lifestyle Changes

Your life may look different than it did before your first child.

Increased stress from parenting, work, or other factors can affect fertility. Weight gain or loss since your last pregnancy plays a role. Less frequent intercourse due to exhaustion, reduced privacy, or relationship changes affects conception chances. New medications might be impacting fertility.

New Partner

If you have a new partner since your previous child, their fertility is a new variable. About 40 to 50 percent of infertility involves male factors.

Unknown Factors

Sometimes no clear reason is found, similar to unexplained infertility in primary infertility cases. This is frustrating but does not mean nothing can be done.

When to Seek Help

The same timelines apply as for primary infertility.

If you are under 35 and have been trying for 12 months without success, see a specialist. If you are 35 or older, seek help after 6 months of trying. If you are over 40, consider evaluation right away. If you have known risk factors (irregular cycles, previous fertility issues, known conditions), do not wait for standard timelines. Our guide on when to see a fertility specialist provides more detailed guidance on this important decision.

Do not assume that because you conceived before, you will conceive again without issue. Time matters, especially as you get older.

Diagnosis and Evaluation

The evaluation for secondary infertility is essentially the same as for primary infertility.

For Women

Ovarian reserve testing through AMH blood test and antral follicle count assesses how many eggs remain. Hormone testing (FSH, LH, estradiol, thyroid, prolactin) evaluates hormonal function. An HSG (hysterosalpingogram) checks whether fallopian tubes are open. Ultrasound looks for fibroids, polyps, or other structural issues. A review of your previous pregnancy and delivery identifies any complications that might be relevant.

For Men

A semen analysis is essential, even if parameters were normal with your previous child. Sperm quality can change over time.

For Both

Medical history review covers any health changes since your last pregnancy. Lifestyle assessment looks at factors that might be affecting fertility.

Treatment Options

Treatment for secondary infertility follows the same approaches as primary infertility, tailored to whatever factors are identified.

Lifestyle Modifications

Optimising weight, reducing stress, limiting alcohol and caffeine, and ensuring properly timed intercourse can improve chances for some couples.

Ovulation Induction

If irregular ovulation is a factor, medications like letrozole or clomiphene can help.

IUI

Intrauterine insemination may be recommended as a first-line treatment, particularly for mild male factor or unexplained secondary infertility.

IVF

If simpler treatments do not work, or if factors like low ovarian reserve, blocked tubes, or significant male factor are present, IVF may be recommended.

IVF success rates depend primarily on current age, not on whether you have had a previous pregnancy. A 38-year-old with secondary infertility has similar IVF success rates to a 38-year-old with primary infertility.

Treatment for Specific Conditions

If evaluation reveals specific issues like fibroids, polyps, or Asherman syndrome, surgical treatment may be recommended. Thyroid disorders, hyperprolactinemia, or other hormonal issues are treated medically.

The Unique Emotions of Secondary Infertility

Secondary infertility comes with a complex mix of emotions that can be difficult to navigate.

Gratitude and Grief

You can be deeply grateful for the child you have while also grieving the child you cannot seem to have. These feelings coexist, and neither invalidates the other.

Guilt

You might feel guilty for wanting another child when you already have one. You might feel like you are being greedy or ungrateful. These feelings of guilt are common but not based in reality. Wanting to grow your family is a natural desire, and struggling to do so is painful regardless of how many children you already have.

Isolation

People with secondary infertility often feel like they do not belong anywhere. Primary infertility support groups may feel unwelcoming because you have a child. Parent groups do not understand your struggle. Friends and family may minimise your pain with comments like "at least you have one" or "just be grateful for what you have."

Explaining to Your Child

If your child is old enough to understand, they may be asking for a sibling. Managing their expectations while protecting your own emotions is challenging.

Finding Support

Despite feeling isolated, support is available.

Secondary Infertility Support Groups

These exist specifically for people in your situation, both online and sometimes in person. Connecting with others who truly understand can be immensely valuable.

Counseling

A therapist who specialises in fertility issues can help you process the complex emotions of secondary infertility and navigate decisions about treatment.

Your Partner

Secondary infertility can strain relationships. Open communication about your feelings, fears, and hopes is essential. Consider couples counseling if you are struggling to support each other.

Selective Sharing

You do not have to share your struggle with everyone. Be selective about who you confide in, choosing people who are likely to be supportive rather than dismissive.

Talking to Your Child

If you have an older child who is aware of your desire for another baby, navigating these conversations can be difficult.

Be honest at an age-appropriate level. You might say something like "We would love to have another baby, but sometimes it takes a while" without going into medical details.

Reassure them that your family is complete and wonderful as it is, regardless of what happens.

Try not to burden your child with your grief. They should not feel responsible for your emotions or feel that they are not enough.

When to Consider Stopping

At some point, you may need to decide whether to continue pursuing another child or to accept your family as it is.

This decision is deeply personal and depends on your age and prognosis, your emotional and financial resources, your overall wellbeing, and what feels right for your family.

There is no right answer. Some people pursue treatment for years; others decide relatively quickly that they are content with their existing family. Both choices are valid.

Medical Disclaimer

This article provides general information about secondary infertility. Individual situations vary, and evaluation and treatment should be personalised based on your specific circumstances. Please consult with a qualified healthcare provider or fertility specialist for guidance.