Last night, after going 4 months without having sex, I had sex again for the first time. The guy was bigger than I have ever been used too, but it didn't cause any pain or discomfort. Afterwards, I noticed a lot of blood down there and when I went to clean up, I really the blood was gushing and not stopping. It continued to bleed out for 2 hours straight, blood was everywhere. I felt no cramps or anything else, do you have any idea what could have caused this? I do have a vertical vaginal septum, I'm not sure if that has anything to do with it.