During intercourse I slipped out and my penis hit my partners pelvic bone, straight away it was sore and now my scrotum has swelled up, it is to the right of my scrotum and both testicles seem to be okay and aren't painful, neither is my penis. The swelling around the back of my scrotum however is causing me pain and is quite large, it's hurting to walk. I tried urinating and I had no pain. Just a bit worried about the swelling