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28-day cycle vs. 21 day cycle

28-day cycle vs. 21 day cycle

Ovulation usually occurs midway through the menstrual cycle. However, not all women ovulate at that time. Ovulation can occur either before or after the expected date.

By BSc (biologist & science teacher), MD, MSc (gynecologist), BSc, MSc (embryologist) and (invitra staff).
Last Update: 10/06/2017
One comment
    1. Please help me!

      l am trying to get pregnant. My gynae told me that I still have chances of getting pregnant. He took a scan on me and confirmed my great chances. He prescribed me a Trisequen and Fertomid 50. I had my periods on day 23 on Trisequens. On day 5 of my periods I started with Fertomid 50. When will I start ovulation? When may I start having sex? I am worried my man went to Brazil and is coming back on Tuesday.