What is the bleeding like from a chemical and how long does it last? I think I’m having my first. I had three vvvfls and then very sudden heavy bright red bleeding (not how my period usually comes on) and back pain. It’s been going on for almost three days and is getting lighter. I will go a few hours with barely any and then a lot comes at once? Is this normal? When will it stop? Sorry for the tmi :(