I have PCOS my doctor put me on NORETHINDRONE for 10 days after I️ got my period 3 days later which was 7-10 . I BD before my period being the 5th & after on the 8th.according to an app I have my fertile window is between 18th-23rd. I BD on the 20th. On the 23rd i went to pee & when i wipes it was very very light blood almost pink (i was cramping lightly the whole Morning) on I BD again last night & this afternoon I had the light cramping & pinkish blood aging after i wiped. Someone help me please what can this be ?