During wild sex with my girlfriend, the penis came out and as it was trying to inn again, it hit her ars cheek and my penis bended as it was in a fast speed, straight away i felt pain right in the end of my penis under my balls, now after 2 days i have noticed mt balls are bruised up, especially at the end of my penis, under the balls. It feels very heavy, and they are a bit swollen in the end. I am really worried i have caused myself a permanent injury, i have no problem having an erection, but when i tried having sex again, it was still painful when i was trying to push in! what do i do, is the problem serious?