For the past few months I have been having a 20/21 day cycle. I had my periods between 26-29April which is usually 4 days. Then I ovulated probably  between the 2-4 May also had unprotected sex during that time. Then on the 6 May I got brown and then pinkish discharge when I wipe this lasted 3 days. Then I had nothing happening on the 9 May only clear/cream discharge with no blood. Then on the 10 May I started bleeding like a normal period when my period is only expected in another week.