RIB MUSCLESEXTREEMLY SORE after playing volleyball?

I play year round volleyball and i had to take a 3 week break to study for finals and go on a mission trip, i used to play 4 days a week and do conditioning. 2 days ago, it was my first time back and i went to a 5 hour volleyball clinic and later that day and the next day i was extreemly sore. today though, my muscles around my ribs are so sore i couldnt get out of the bed, i had to roll off and crawl till i could find something to hold onto!! it hurts really bad to sneeze and to laugh and it takes me FOREVER to sit down because i have to go so slow! also, my legs and right shoulder are sore as well, but that was expected, and they are also not as bad as my ribs. BUT what i am wanting to know it, what could i have done to them and what is the treatment for it! its been almost 3 days and the pain is getting worse