I have had the same thing!!! It is very uncomfortable... i had it so bad one weekend i rang the midwives and went into hosp to get it checked out... My obs popped in and said it was the way the baby was sitting... was transversal... Once it moved the pain got a bit better.... The midwife actually said you cna bruise inside from the baby pushing on your muscles... I felt bruised for a few days then it subsided... You can put a warm heat pack on if you want too.... Hope you get some relief.....