Why is my uterus being stupid 😭

Okay please help because I am genuinely befuzzled here. I recently got into a new relationship with someone after almost 6 months of an almost non-existent and very pathetic sex life. We're both in our early 20's, he's larger than my ex, and we're both of a little above average health. We have sex as often as possible, both have previous children, and while we're not actively trying to conceive and are taking our time, we are doing nothing to prevent it.

Now, with background, here's where I am confused.

We have been sleeping together for over 2 months now, almost every day at least twice, unprotected, and going strong and I have had regular periods before and after EXCEPT FOR THIS ONE.

It started four days early, an I started off with light pink spotting and know I ovulated this widow because I almost always have ovulation cramps (and damn it, did I this month!). Not only did I start off spotting, but it got super heavy very quickly and I am still spotting going on day 11 after today. They usually only last for 5-6 days and I usually just wake up at 4-5am in a pool of my own despair. It is driving me insane, because this is one of only a handful of weird periods I've had and I HATE not knowing what's going on in my own body. Please help because I don't wanna keep wasting pads and panties 😭 it wouldn't be a downer if I were pregnant and it won't ki me if I'm not, so please don't worryabout hurting my feelings 😂