In short
Conception depends on timing, egg and sperm health, and a clear path for the fertilized egg to implant — age affects the odds for both partners, and not conceiving after roughly a year (or six months for those over 35) is the usual signal to start looking into why.
On your report
AMH (Anti-Müllerian Hormone), FSH (Follicle-Stimulating Hormone), LH (Luteinizing Hormone), Testosterone, Total
On this page
01
How Conception Actually Works
Each menstrual cycle, one ovary typically releases a single egg during ovulation, and there's only a short window — roughly the day of ovulation and the few days before it — when sperm present in the reproductive tract can fertilize it. Sperm can survive inside the body for several days, which is why the fertile window spans more than just the single day of ovulation itself.
After fertilization, the embryo travels to the uterus and needs to implant successfully in the uterine lining to establish a pregnancy — a step that fails more often than many people realize, which is part of why conception can take several cycles even when everything is working normally.
02
Age and Fertility, Honestly
Female fertility declines gradually through the 30s and more noticeably after the mid-to-late 30s, as both the number and quality of remaining eggs decrease with age — a biological reality rather than a lifestyle failing. Male fertility also declines with age, more gradually, through changes in sperm quality and quantity, though the effect is generally less steep than the female age-related decline.
None of this means conception after these ages is unlikely for any individual — many people conceive later than these general patterns suggest — but it does mean age is a legitimate factor to raise early with a doctor rather than something to discover only after a long unexplained delay.
03
Infertility Is Defined by Time, and It Involves Both Partners
Infertility is generally defined as not becoming pregnant after a year of regular, unprotected intercourse — or six months for women over 35, given the shorter runway age creates. Reaching that point is a signal to seek evaluation, not a diagnosis of a permanent problem; many causes are identifiable and treatable.
Roughly equal shares of infertility trace to female factors, male factors, a combination of both, or causes that remain unexplained after testing. Because of this, evaluation typically includes both partners from the start rather than focusing on one person first.
04
What the Workup Usually Involves
For the partner with ovaries, testing often includes hormone levels — FSH and LH, which regulate the menstrual cycle and ovulation, and AMH, which reflects the remaining egg supply — alongside an assessment of the uterus and fallopian tubes. For the partner with testes, a semen analysis is the standard first step, sometimes alongside a testosterone level if hormonal imbalance is suspected.
These tests don't diagnose on their own; they build a picture that a fertility specialist interprets alongside history, timing, and prior pregnancies. Many causes uncovered this way are treatable with medication, timed intercourse, or assisted reproductive technologies, and even an unclear result still narrows down the next reasonable step to take.
05
Getting Started
A primary care doctor or gynecologist is a reasonable first stop for an initial conversation, with referral to a fertility specialist if the basic workup doesn't turn up an easy answer or if age makes earlier specialist input worthwhile. Bringing both partners to that first conversation tends to move things along faster than one partner troubleshooting alone.
Trying for a year without success, or six months over 35, is worth acting on rather than waiting through — evaluation itself doesn't commit anyone to a particular treatment, it simply provides information to make the next decision with, at a pace that fits the couple involved.
Values mentioned in this story
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Sources
- Infertilitymedlineplus.gov
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