ok....so i was having sex with my gf and i felt this thing poking me....i didnt mind but it was quite uncomfortable...but i kept going...suddenly when i pushed in farther this very and i mean very sharp pain in the head of my penis almost like a razor blade cut it...so i pulled out cuz the pain was sooo big...and i was bleeding from my fucking penis...i was like omfg....she rushed and brought me wet paper towel so i applied pressure and stopped the bleeding....i looked at it afterwards...and theres this like cut on that bottom foreskin...i am uncut....and like small piece like peeled off the head and it really hurts....anyone know what the fuck that thing that cut it inside of her was? im really scared...im 18 and i dont want anything bad to happen