Plan b bleeding

I had intercourse without protection March 23rd. On March 24th less then 24 hours I had taken plan b (my way pill). Today 4/1 I have slight bleeding down there. Couple days ago I kept checking for ovulation around that time and I was ovulating. I’m so confused what’s going on now. Is my cycle just messed up. I’m nervous as I don’t want to get pregnant. I tried to do whatever I can.