Advanced Fertility Care - How cervical mucus changes throughout your cycle Dry, and the least fertile. This mucus is produced a few days before your period, during your period, and immediately after
How to calculate the safe days for having intercourse to avoid unwanted pregnancy in an irregular menstrual cycle? When is the possible ovulation day in a 32 days cycle - Quora
Timing of Sexual Intercourse in Relation to Ovulation — Effects on the Probability of Conception, Survival of the Pregnancy, and Sex of the Baby