4 days after plan b

Hi so it's been 4 days since I took plan b for the first time. A few hours after I took it my symptoms started and haven't gone away. I'm extremely nauseous and have horrible cramps. I do have ovarian cyst and that's mostly where the pain is coming from. I knew it would mess with my cycle but I thought the cramping and pain would only last like a day. Is this normal? Do people still have cramping 4 days after? How long does it last? Also I think I ovulated the day before I took it so I'm not even sure if it's working, does it hurt this much rn if it's not working 😔 I'm anxious bc I've never done this before and idk what's happening. (I'm not worried about having a baby, I took it bc it was with a one night stand which I've never done before but I'm in a place in my life where I could raise a baby)