My period for the month of April was from ApriI 6-9. I had unprotected sex on April 16 so I used Nordette as an ECP and had a 3-day withdrawal bleeding from April 25 until 27.
And then, just 18 days later, on May 13-15, I had my period. Can I consider that 18-day interval from the day of my withdrawal bleeding to the day of my period as one menstrual cycle, or should I count from April 6 instead?
I had unprotected sex on May 16 and 18. Are those dates safe for sex?