Search Results: bleeding after sex

So my last period started January 4, 2021 and ended January 8. I had unprotected sex with my boyfriend January 11 at 11 pm and he ejaculated in me. I did not take Plan until the morning of January 15 at 10 am (past the 72 hour period more the pill to be effective). Today is January 22 and it has been exactly 7 days since I took the pill. Usually when my period comes I start out as a brownish-reddish stain and then it gets brighter. I wiped today this morning and there was bright red blood on the tissue, later this afternoon I wiped again and it was brownish dark red with some nasty tissue looking like discharge... I usually have normal cycles. I calculated my fertile window from my last period and it’s around January 14 and ovulation at Jan 17-18. The brand name of the pill was Take Action What could this possibly mean? Could I possibly be pregnant from implantation bleeding or did the Plan B pill cause the bleeding?

I feel like one ruptured in my a week ago, and I have been stuck in bed with pain on my lower left side and bleeding ever since. It's not my period, because it started right when I was due to ovulate. More bleeding has caused more burning and pain, but the pain subsides as the bleeding does. Information online is kind of scarce and saying it could be normal the first 2-3 days, but not really longer than that. I thought it might stop, but it didn't before the weekend.

I might be going to the clinic tomorrow, but I was hoping someone on here has had experience they can share? Online stuff is not telling me enough to know if I should worry or not.

I have only felt like cysts popped two other times. Once was 6 years ago after rough sex, the other was a year ago. Both only hurt a little and had no bleeding.