I have a lot of pain in the relationship, why?

When I'm going to have sex with my boyfriend, it hurts a lot, why? He said he feels like he knocks in the background, is my uterus low? Should I get pregnant, I need to do some treatment? Will it harm the baby?
Expert answer:

Possibly there is no problem with you (but you will have to consult a gynecologist to be examined and be sure), maybe your anatomy is from a short, short vagina, you have to ask your boyfriend to "go slow" in the relationship, there will be no problem if it becomes pregnant and will not affect the baby.