My baby is posterior position

Crystal
My doctor isn't concern and says that i can flip my baby into anterior position by getting on all 4s, or that he can flip when I go into labor. I'll be 38 tomorrow. My tired and my back has been killing me for a week. Any of you other ladies have the same problem did you go into early labor or overdue. I don't think I can wait til my due date to have him. Any suggestions will help.