Frequent cramps at 36 weeks, is that typical?

👪 5/6/2016🚜👣

I have alot of period type cramps throughout the day, I can't time them or anything because I can't really tell, or notice exactly when it starts. I have a constant light dull cramp type feeling in my back & achyness in my legs.

Are these contractions? Is my body getting ready? Should I be concerned? I've never done this before so I don't know whats going on :/