Braxton hicks or actual contractions??

Sh

So for the past 2 days my stomach has been getting hard like a rock and I feel pressure pushing down feeling. But no actual pain. This is my 3rd pregnancy, but I know all pregnancies are different. So what's going on? Also a week ago I took my last progesterone shot, I am now 37 weeks. And when I go for a walk in do feel contraction pain like. I'm hoping I will deliver soon.

Has anyone taken these shots and how long after did you deliver. TIA