Help!!! Heavy Period after rough sex.

So... this is a complicated one. 
I was diagnosed with PCOS two years ago. 
Got better, no more two week-RED SEA-maxi-pad every two hours. Right now, I was recently told I had a UTI, and I had just had my period the 2nd of July (Didn't last long, 3 days tops and was light (( most of my periods have been recently for the last 6 months or so ))) I tried starting a new birth control pill a week ago on Sunday, however I stopped taking it until Saturday of the next week bc I'd forget (I took all of them until then).
Okay so two nights ago I had amazing rough sex, probably I shouldn't have with a UTI, it was a little uncomfortable and I was sore afterwards but it was still pretty lit 🤷🏻‍♀️🔥
Anyways,  I wake up this morning and I'm bleeding heavily, more than when I thought I had my period. I don't know what to think of it, what do you guys think? 😔