Chest pain.

33 w 6 d.. I post here a lot cause I'm a bit of a hypochondriac and I know it. I don't want to go to the hospital for everything when I know most of it is in my head but this morning I woke up having really uncomfortable chest pains when I breathe. Both lungs. It hurts more in my back? It feels a bit like when you have a really bad cough for a while, except I haven't had any cough.. I'm calling my doctor today anyway and will mention it but I know she will just tell me to go to labor and delivery, that's all she ever says..