When to go to the hospital?

Tiffany
So I am 37 weeks + 2 and I have been having some pretty bad low back pain since yesterday. This morning I woke up to a sharp pain in my lower abdomen causing my legs to shake and I have been cramping on and off since.. I am trying to decide if I should go get checked but I always feel stupid in case it's really nothing, like I feel bad wasting their time... What would you do?