Also she may not be well enough lubricated. If she is not lubricated enough sex will also be painful for her.
Pain will also make it likely that her muscles will contract and make everything tight down there.
Try a gentle approach with plenty of lubricant. IF sex is painful for her that is not a good recipe for a healthy relationship.
I don't know, she really should see the doctor. There are bacterial infections someone can get, and vaginosis. Rough sex is really no prescription for sexual pleasure, sorry to say. The vagina is sensitive.
what kinda of infection could she have? and also she has this thing when we change positions durning intercourse her vagina will tighten to the point when i can barley insert would that have anything to do with the pain
Maybe she has an infection. She should see her doctor.