Chapter 1 · July 2026
Learn the window, prepare the body, keep the signal clear
The useful fertility fact is not a secret hack: pregnancy is most likely around ovulation. ASRM describes the fertile window as the six-day interval ending on the day of ovulation, with intercourse every 1 to 2 days during that window giving the highest pregnancy rates and two to three times per week nearly as good for many couples. ACOG's patient guidance says the same basic thing in plain language: time sex around ovulation.
Cycle tracking helps most when it lowers confusion instead of raising obsession. Cervical mucus patterns, ovulation predictor kits, and cycle length can all help estimate timing. But irregular periods, very short or long cycles, absent periods, known or suspected endometriosis, pelvic infection history, prior pelvic surgery, recurrent pregnancy loss, or a known sperm issue are reasons to ask earlier rather than simply track harder.
The body-prep list is familiar because it works broadly, not because it is glamorous. Book a prepregnancy visit. Review medications and supplements before conception. Update vaccines if needed. Treat medical conditions like thyroid disease, diabetes, high blood pressure, depression, or eating disorders with pregnancy in mind. Stop tobacco and recreational drugs, avoid alcohol once pregnant or possibly pregnant, and start folic acid before trying.
Age matters, but in the mid-to-late 20s it should inform, not haunt. ReproductiveFacts says a healthy person in their 20s or early 30s has roughly a 25 to 30 percent chance of conceiving per cycle, and most couples with normal fertility conceive within a year. The standard evaluation point is 12 months of regular unprotected sex when the person with ovaries is under 35, sooner when a known risk factor is present.
The open question
How much should you track before trying?