pulled muscle....

yesterday i worked 1-8 and around 4:45 i was pushing carts and my back was killing me.....and then the rest of my shift the pain was so bad....i couldn't push as many carts as i usually could....i got home a started crying from the pain....i think i pulled a muscle in my back....it is so painful!!!!! i have work tomorrow morning from 8:30-1:30.....if it still hurts tomorrow i'm going to tell my manager and then tell them that my cart limit is 2 or 3....lifting was really bad yesterday....there was a lot of pop and wine and beer and orange juice and milk.....it was just really bad.....i hope it heals quick!!!