Medical trainees are delaying childbearing due to competing demands of career, financial constraints, and limited parental leave. Delaying childbearing increases the risk of obstetric complications, with up to one-quarter of female physicians facing infertility. Education on family planning and fertility is rarely discussed among medical trainees, and research on medical trainees' knowledge of fertility and infertility is minimal. Subjects included medical students, residents, fellows, and attendings assigned female at birth. The distributed survey included the Fertility and Infertility Treatment Knowledge Score (FIT-KS) instrument to assess for fertility and infertility knowledge. Outcome measures include participant age, stage of training, parity, specialty, and FIT-KS. Of the 291 participants included in the final analysis, participants scored an average of 20/29 (69%) on the FIT-KS. Around 44.8% (n=130) of participants overestimated the fecundability of a 30-year-old woman, and 36.9% (n=107) underestimated the chance of miscarriage in peak reproductive years. Five out of eight questions pertaining to infertility treatment had a <50% correct response rate. About 76.6% (n=216) of participants underestimated in vitro fertilization (IVF) success for a woman <35 years old, and 56% (n=158) overestimated the success of IVF for a woman >44 years old. Around 43.6% (n=123) of participants overestimated the average cost of IVF. Of the main outcome measures, only those participants representing obstetrics and gynecology (OB-GYN) performed better on average than all other specialties (FIT-KS=21.7 vs. 19.5). Participants overestimated fecundity with increasing age and had insufficient knowledge of infertility treatment success. More awareness and early discussion about family planning and fertility goals are needed in medical training.