Open Question: Can someone please help me the doctors are really stuck?

I'm 12 years old and i went to my friends swimming party yesterday i was swimming and i banged my head off the wall really hard it only hurt for a short time about an hour later we all played hide and seek in her garden i hid in a bush i remember sitting down on the floor under the bush and the next thing I know people are saying my name in a worried voice and i'm being carried to my friends