Infertility is clinically defined as not being able to get pregnant after one year of regular, unprotected sex, or after six months if you’re over 35. But you don’t necessarily need to wait that long to start paying attention to clues your body may already be giving you. Several physical signs, cycle patterns, and risk factors can signal a potential fertility problem well before you hit those timelines.
The Timeline That Matters
Even under ideal conditions, getting pregnant takes time. In your early to mid-20s, the chance of conceiving in any given month is about 25 to 30 percent. By age 40, that drops to around 5 percent per cycle. So a few months of trying without success is completely normal, especially as you get older.
The one-year and six-month benchmarks exist because they reflect a reasonable window for most couples to conceive naturally. If you haven’t conceived within that window, it doesn’t mean pregnancy is impossible. It means further evaluation is worthwhile. About one-third of infertility cases trace back to the female partner, one-third to the male partner, and the rest involve both partners or have no identifiable cause.
Signs to Watch for in Women
The most telling clue before you even start trying is your menstrual cycle. A cycle shorter than 21 days, longer than 35 days, highly irregular, or absent altogether can mean you’re not ovulating. Without ovulation, pregnancy can’t happen. That said, ovulation problems can still occur even with regular cycles, so a normal-looking period doesn’t guarantee everything is working as expected.
Polycystic ovary syndrome (PCOS) is one of the most common causes of ovulatory infertility. Its hallmarks include irregular periods, excess hair growth on the face or body, acne, and weight that’s difficult to manage. Hirsutism (unusual facial or body hair) alone is considered a strong predictor of the hormonal imbalance that drives PCOS.
Other things that can disrupt ovulation include high levels of physical or emotional stress, very low or very high body weight, and rapid weight changes. These factors interfere with the hormonal signals your brain sends to trigger egg release each month. Painful periods, especially pain that worsens over time or occurs during sex, can point toward endometriosis, another condition linked to difficulty conceiving.
Signs to Watch for in Men
Male infertility often has no obvious symptoms, which is why it frequently goes undiagnosed until a couple has trouble conceiving. But some physical signs do exist. Difficulty maintaining an erection, low sexual desire, or problems with ejaculation (including very small volumes of fluid) can all signal an underlying issue.
Pain, swelling, or a lump in the testicle area warrants evaluation regardless of whether you’re trying to conceive. Hormonal imbalances in men can show up as decreased facial or body hair, unusual breast tissue growth, or low energy. Less commonly, recurrent respiratory infections paired with infertility can point to a genetic condition affecting both the lungs and reproductive tract. A sperm count below 15 million per milliliter is considered lower than normal.
What Happens During a Fertility Workup
If you suspect a problem, a fertility evaluation typically involves both partners. For women, this usually starts with blood tests to check hormone levels. One key marker is anti-Müllerian hormone (AMH), which gives an estimate of your remaining egg supply. Levels below 1 nanogram per milliliter suggest a declining reserve, though a low number alone doesn’t predict whether you can or can’t get pregnant. Your doctor will also likely check follicle-stimulating hormone (FSH) around day three of your cycle, along with other hormones that influence ovulation.
If blood work doesn’t reveal the full picture, imaging comes next. A hysterosalpingogram, or HSG, is an X-ray procedure that checks whether your fallopian tubes are open and whether the inside of your uterus looks normal. It’s typically done in the first half of your cycle (days 1 through 14). You may be advised to take a pain reliever beforehand, and you can expect some cramping during the procedure and sticky discharge afterward. Most people drive themselves home the same day. A sonohysterography, which uses ultrasound and sterile fluid to examine the uterus, is another option, though it doesn’t provide information about the tubes.
For men, the cornerstone of evaluation is a semen analysis, which measures sperm count, movement, and shape. Current guidelines strongly recommend at least one semen analysis as part of any initial fertility workup. If sperm counts are extremely low (1 million per milliliter or fewer) alongside other findings like elevated FSH or smaller-than-normal testicles, genetic testing may be recommended to check for Y-chromosome abnormalities that affect sperm production.
When to Start Investigating Sooner
You don’t have to wait a full year (or six months if you’re over 35) if you already have reason to suspect a problem. Seek evaluation earlier if you have irregular or absent periods, a known diagnosis like PCOS or endometriosis, a history of pelvic infections or surgery, or if your male partner has a known testicular issue or hormonal condition. Couples who have experienced two or more miscarriages should also have both partners evaluated.
If you’re considering seeing a fertility specialist for the first time, it helps to come prepared. Know the details of your menstrual cycle (length, regularity, symptoms), how long you’ve been trying, and any relevant medical history for both you and your partner. Useful questions to ask include how long the full workup will take, what the first step in treatment would be, and whether the clinic evaluates and treats both male and female infertility. Some couples get a diagnosis within a few weeks; others need a longer process of elimination.
What Infertility Doesn’t Mean
A diagnosis of infertility is not the same as a diagnosis of sterility. Most people evaluated for infertility have a treatable or manageable cause. Ovulation problems, for instance, often respond well to medication. Structural issues in the uterus or tubes can sometimes be corrected. Male factor infertility has a range of options depending on the cause and severity. Even when natural conception isn’t possible, assisted reproduction remains an option for many couples. The evaluation itself is the most important first step, because you can’t address what you haven’t identified.