Period

My period usually lasts about 5 days, and usually takes place the last week every month. The 21st of April I had unprotected sex with my boyfriend, I took the morning after pill the on the 22nd. The doctor warned me my period might be late, so when I had a bit of blood the Monday I was abit concerned. Then Tuesday it stopped. Wednesday until now, 1st May. I haven’t stopped bleeding. It’s gotten much heavier throughout the week and I’m not sure if I should be concerned or not? It’s not showing any signs of stopping.