I Recently Got Pushed Down.slam So Hard Knockt The Wind

i recently got pushed down.slam so hard knockt the wind out. got exray at local hospital, no broken bones. this happened in july.now i have a hard time laying down to sleep, also if i've been on my feet more than 4hrs, it hurts to do anything. some thing in there didn't heal right. sometimes it feels like a golf ball is buried in there some where. it can be very painful. what should i do and who should i see.do i need referals. i have state insurance. please help......sincerley jean murphy