My friend jumped on me in a pool and hurt my upper outer thigh, it's brusied and hurts a lot in certain motions what's wrong?

Thigh pain: Sounds like it just didn't happen and it sounds like a mostly soft tissue injury. So it will just take time to heal - if it was a blunt injury this is more likely. If you torqued anything, you should see an orthopedist.

Thigh bruise: Thigh bruises are common in football . Sounds like you have one.The thigh has large fleshy muscles and contusions w/ muscular and sq bleeding common. Immediate ice, comp. Wrap should help.