I seem to have some possibly internal issues? Vaginal?!

I seem to have some possibly internal issues? Vaginal?

Me and my boyfriend just began having sex, but he is very large. im not just saying this. the largest partner ive had, and it was his first time having sex and he told me he feels like something deep inside of me is scratching him, maybe like a rough spot in my vagina? I've never been approached with this before and ive had other partners. But does anyone know what i can do to correct this? Cause sex as it is , is very painful with him. But also painful for him as well. So , should we try to use a lubricant. Cuz i normally have no problem with being wet or anything. I could use some help , seriously. (He ended up making me bleed) even though it wasnt my first time, but to begin with i wasnt very active. Its just a spot deep deep in there that seems to rub him uncomfortably, like sandpaper maybe as he describes it. Could this be my gspot and since im so tight its hurting him???!

If I were you, I would go see your gynecologist. He/She will check you out and see if there is anything there. He/She will also be able to answer your questions and help you through this. Since this was his first time, maybe there is something with him. In any event, go to your gynecologist to rule out any questions on your end. Since you have never had this problem before, it just might be something on his end. GOOD LUCK!!!