Tiny Blood Streaks in Vaginal Discharge

HI,

I'm 29 with PCOS, virgin, on 1/2 a pill of Spiractin daily and Metformin.

My cycle lasts 25 days most times and I have my periods for 7 days.

My periods ended on day 7. On day 8 I had clear white discharge as normal, except it had tiny little streaks of red blood up to a few mm long. Day 9 this continued and once there was like a pinkish blob. Day 10 I just had clear discharge for most the day. Day 11 I mostly had clear discharge until the evening when I had the streaking blood again.

Usually this might occur a couple of days or day before my period. But it has never happened right after.

What is going on?