Help please

When I’m constipated and I do poop, I bleed. I never thought much of it but my mother found out last night. She warned me it could lead to unhealthy situations. Then she gave me two laxatives around 11:30. It’s 3:57 am and I’ve been on the toilet for a while. I was in so much pain and I’ve been on these laxatives before. They didn’t hurt nearly as much as this time. This time, it was horrible. It still is. I’m on iron medicine and I don’t know if this has anything to do with it. Please help.