Could it be my time?!?

Brianna

38 weeks and 4 days, I’m already 4cm dilated and tonight my back has basically been what I would describe as spasms like one second it hurts really bad and then the next it’s fine..should I go into the hospital or just wait it out..this is the first real pain I’ve felt I haven’t had any Braxton Hicks so far or anything..I’m also a FTM so I don’t know what contractions really feel like