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TTC for 6 Months, No Success: What to Do Next

TTC for 6 months no success what to do next? An OB-GYN walks through red flags, first investigations, and NHS vs US referral pathways.

5 min read
TTC for 6 Months, No Success: What to Do Next

If you've been TTC for 6 months no success what to do next is the question keeping you up at night, you're in the majority, not the minority. Most couples conceive within a year of trying, but six months in is when the worry sets in. The good news: there is a clear next step, and it isn't guessing.

Is 6 Months Long Enough to Worry?

Patients who come to me at the six-month mark often expect me to say it's too early to investigate. The honest answer depends on your age and your history.

[src]Roughly 80% of couples under 35 conceive within 12 months of regular unprotected intercourse, which is why guidelines recommend waiting until the one-year mark for investigations in this group. If you are 36 or older, the threshold drops to six months because egg quality and quantity decline more sharply with age.

So is 6 months of TTC long enough to see a doctor? If you're over 35, yes. If you're under 35 with no red flags, you can wait, but you can also start a conversation now to know when to escalate to a fertility specialist if the next six months don't bring a positive test.

Tip
Worry and investigate are different actions. You can be reassured that six months is statistically normal and still book a GP visit to start the workup early. The two are not in conflict.

Red Flags That Justify an Earlier Visit

Some histories warrant earlier investigation regardless of how long you've been trying. If any of the following apply, don't wait for the 12-month mark.

  • Irregular or absent periods, or suspected PCOS or PMOS
  • Severe period pain or known endometriosis
  • Prior pelvic surgery, ectopic pregnancy, or pelvic inflammatory disease
  • Known thyroid disorder, prior chemotherapy or pelvic radiotherapy
  • Two or more previous miscarriages
  • Partner history of testicular surgery, mumps orchitis, varicocele, or chemotherapy

This list is not exhaustive. If something about your cycle, your history, or your gut feels off, that alone is enough reason to book.

What Your GP or OB-GYN Will Check First

Knowing when to seek fertility help is one thing. Knowing what happens at the appointment is another. Initial fertility investigations are usually staged: a few simple checks first, more advanced tests if the basics don't explain the picture.

Expect a cycle history, an ovulation confirmation (a day 21 progesterone in the NHS pathway, often called a mid-luteal progesterone in the US), and a hormone panel covering TSH, prolactin, and FSH or LH where indicated. AMH and a pelvic ultrasound for antral follicle count may be added depending on your age and history.

[src]NHS fertility assessment follows NICE NG257, which sets out who should be investigated and when. US private labs often run a fuller panel earlier, driven by patient request and insurance design rather than guideline difference.

Don't Forget Your Partner

Male factor accounts for roughly half of all fertility issues, either as the sole cause or alongside a female factor. A semen analysis is inexpensive, non-invasive, and changes the workup more than almost any other early test.

Many couples skip this step because of cultural discomfort or the assumption that fertility is a woman's issue. It isn't, and what to investigate after 6 months of trying should always include both partners. If you're unsure when your partner should book a semen analysis, the answer is at the same time as your own first investigation, not after.

NHS vs US Pathway, What to Expect Next

The pathway after your first visit depends on where you live.

UK

In the UK, your GP can run baseline bloods and refer to NHS fertility services after 12 months of trying, or earlier if you are 36+ or have red flags. Access to NHS-funded IVF varies by ICB (the postcode lottery). See what the NHS fertility pathway actually offers for the full route.

US

In the US, your OB-GYN can run initial investigations and refer to a reproductive endocrinologist. Insurance coverage for fertility testing and treatment varies dramatically by state and plan. See what to ask your US fertility doctor before the first appointment.

[src]ACOG frames pre-pregnancy and early fertility counselling as the entry point to a healthy pregnancy, regardless of how long you've been trying.

A short script for your first appointment: "We have been trying to conceive for six months. My cycles are [regular/irregular]. I would like to start the initial fertility investigations. What can you arrange today, and what would you refer for?"

What This Means for You

TTC for 6 months no success what to do is rarely an emergency, but it is rarely "just keep trying" either. The right next step is the one that matches your age, your history, and your symptoms, not a generic timeline.

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Should I see a doctor after 6 months or wait until 12?+
If you're under 35 with regular cycles and no red flags, 12 months is the standard threshold for investigations. If you're 36 or older, six months is the recommended point to start the workup, and any red flag history justifies an earlier visit at any age.
What tests come first in a fertility workup?+
A cycle history, an ovulation check (day 21 or mid-luteal progesterone), a hormone panel (TSH, prolactin, FSH or LH as indicated), and a partner semen analysis. A pelvic ultrasound and AMH may be added depending on age and history.
Should my partner test before I do?+
Both partners should be investigated in parallel, not sequentially. A semen analysis is one of the simplest and highest-yield tests in a fertility workup and should not be delayed.
How much does fertility investigation cost on the NHS vs privately?+
Initial NHS investigations are free at the point of use. Private pre-conception panels in the UK typically run a few hundred pounds; US costs vary by insurance plan and state, with some preventive screening covered under the ACA and fertility-specific testing often out of pocket.
Medically reviewed by Dr. Rezwana Rumpa · May 17, 2026

References

Citations referenced inline above link to their primary sources (NHS, NICE, CDC, ACOG, ASRM, peer-reviewed journals).

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