Took morning after pill. LOTS of blood.?

Okay so me and my boyfriend were really irresponsible and long story short I had to take a morning after pill. The off brand not plan b. Same active ingred. But anyway I have taken the pill a total of like 5ish times since I was about 17. I m 20 now. I still have more than two weeks til I m supposed to menstrate. I was fertile when he came in me. I took the pill a couple days ago and now I m bleeding. Like a lot. And its not clotty like my period. It s like real blood and I have to change my pad every hour or so....im getting really worried BC my body has never had this reaction to the morning after pill before. Should I be worried?