Under 35 with no known issues: see a doctor after 12 months of well-timed intercourse without conception. Over 35: after 6 months. Over 40: see a reproductive endocrinologist before or when you start trying. If you have known risk factors (irregular periods, endometriosis, prior pelvic surgery, or male factor concerns), skip the waiting period entirely.
The Standard Timelines
ACOG and ASRM define infertility as the inability to conceive after 12 months of regular, unprotected intercourse for women under 35, or after 6 months for women 35 and older. These timelines account for the fact that even with perfect timing, conception is a probability game — it takes multiple cycles for most couples.
| Your Situation | When to Seek Evaluation | Why This Timeline |
|---|---|---|
| Under 35, no known issues | 12 months of trying | 85–90% of fertile couples conceive within 12 months; beyond that, investigation is warranted |
| 35–39, no known issues | 6 months of trying | Per-cycle rates are lower and time is more limited; earlier intervention preserves options |
| 40+ | Immediately or within 3 months | Per-cycle conception rates are 5–10%; early evaluation prevents wasted time |
| Any age with risk factors | Before or when you start trying | Known issues (PCOS, endo, tubal history, male factor) justify skipping the wait |
| Recurrent miscarriage (2+) | After second loss | Recurrent pregnancy loss has identifiable causes in ~50% of cases |
Red Flags That Warrant Immediate Evaluation
Regardless of how long you've been trying, see a doctor if you have any of the following:
- Irregular or absent periods: Cycles shorter than 21 days, longer than 35 days, or absent altogether suggest ovulatory dysfunction. PCOS is the most common cause.
- Very painful periods: Severe menstrual pain (dysmenorrhea) that interferes with daily life, especially if combined with pain during sex or bowel movements, may indicate endometriosis.
- Known history of STIs: Chlamydia and gonorrhea can cause tubal scarring and blockage even after treatment, often with no symptoms.
- Prior pelvic or abdominal surgery: Any surgery in the pelvic region (appendectomy, ovarian cyst removal, C-section) can cause adhesions that affect fertility.
- Known male factor: Prior semen analysis showing abnormalities, history of undescended testes, varicocele, or ejaculation issues.
- Two or more miscarriages: Recurrent pregnancy loss has specific workups (karyotyping, antiphospholipid antibodies, uterine anatomy) that can identify treatable causes.
- Cancer treatment history: Chemotherapy and radiation can damage eggs and sperm. Evaluation of remaining fertility is important.
OB-GYN vs Reproductive Endocrinologist
Your regular OB-GYN can run initial bloodwork (FSH, AMH, TSH) and order a semen analysis. Some will prescribe Clomid or Letrozole for ovulation induction. But for anything beyond basic evaluation and first-line medication, you need a Reproductive Endocrinologist (RE).
| OB-GYN | Reproductive Endocrinologist (RE) | |
|---|---|---|
| Training | 4-year residency in OB-GYN | OB-GYN residency + 3-year fellowship in reproductive endocrinology and infertility |
| Can prescribe Clomid/Letrozole | Yes | Yes |
| Can perform IUI | Some do | Yes |
| Can perform IVF | No | Yes |
| Can perform egg freezing | No | Yes |
| Handles complex cases (endo, tubal, male factor) | Limited | Specialist-level |
| Board certification | ABOG | ABOG + REI subspecialty certification |
| When to see | Initial evaluation, basic treatment | Failed first-line treatment, complex diagnoses, IVF, preservation |
How to find a good RE
- SART member: The Society for Assisted Reproductive Technology requires member clinics to report outcomes to the CDC. Check sart.org for clinic success rates.
- Board certified in REI: Verify at the American Board of Obstetrics and Gynecology website.
- Clinic success rates: Available at the CDC ART Success Rates database. Compare live birth rates per transfer (not just pregnancy rates) for your age group.
- Patient reviews: FertilityIQ provides detailed, verified patient ratings of clinics and individual doctors.
What Happens at Your First Fertility Appointment
For Her
- Medical history review: Menstrual history, prior pregnancies, surgeries, medications, family history of early menopause or genetic conditions
- Bloodwork (usually cycle day 2–4): FSH, LH, estradiol, AMH, TSH, prolactin, sometimes vitamin D and testosterone
- Transvaginal ultrasound: Antral follicle count (AFC) to assess ovarian reserve, check for cysts, fibroids, or structural abnormalities
- HSG or SHG (hysterosalpingogram or sonohysterogram): Checks if fallopian tubes are open and uterine cavity is normal. Usually scheduled separately.
For Him
- Semen analysis: The single most important male fertility test. Measures count, motility, morphology, volume, and pH. Should be done early in the workup — male factor contributes to 40–50% of infertility cases.
- Abstinence window: 2–5 days before the sample. Too short = lower volume; too long = more DNA-damaged sperm.
The most common mistake
Delaying the male evaluation. Too many couples spend months (and thousands of dollars) investigating the female partner before a semen analysis is ordered. A semen analysis costs $100–$300, takes 30 minutes, and identifies or rules out male factor immediately. It should be one of the first tests, not the last.
Exploring Affordable Treatment?
If treatment costs in the US are a barrier, IVF abroad can reduce expenses by 50–70% without sacrificing quality.
Compare IVF Costs Worldwide