Plan b side effects

Ru

So I’ve taken plan b twice in the last 4 ish months. The first time, I’ve had my period since then. That was a few months ago everything was fine, nothing like this time. The second time was a few weeks ago, I’d say almost a month now. My period is late by 2 weeks & I’ve had light spotting but the worst part is I’ve had horrendous cramps the entire time since I was supposed to start my period. For 2 weeks I’ve had the most imaginable cramps I’ve ever had in my life. I understand that it does a lot to your body. It is not a form of birth control & I understand that, fully. Like I’m beyond the hate that you get for taking plan b’s, I’ve heard it all. I’m just wondering how much longer will I be dying of cramps or if anyone else had experienced this.