Q: How late in the cycle is ovulation possible?
A: If you regularly have long cycles, that may indicate a problem and reduces opportunities to get pregnant. Your uterine lining needs to be ready to accept the fertilized egg, and a long cycle prior to ovulation might make the lining less receptive. If you have long cycles on a regular basis, cycles that last longer than 35-40 days, you should make sure exactly if and when you ovulate and have it checked out by your doctor.