Follicular Phase: What It Is and How it Impacts You
Sex during periods: benefits, side effects, risk of pregnancy, risk of UTI and tips
The Normal Menstrual Cycle and the Control of Ovulation - Endotext - NCBI Bookshelf
The Normal Menstrual Cycle and the Control of Ovulation - Endotext - NCBI Bookshelf
7 Period Problems You Shouldn't Ignore | SELF
Real-world menstrual cycle characteristics of more than 600,000 menstrual cycles | npj Digital Medicine
Timing of Sexual Intercourse in Relation to Ovulation — Effects on the Probability of Conception, Survival of the Pregnancy, and Sex of the Baby | NEJM
Period Sex: Why Sex During Period Is a Good Thing - Dr. Jolene Brighten