Need help for FTM

I’m 38+1 and since earlier today I have felt lower back pain and I’ll occasionally have these real intense sharp cramps start in my lower back and shoot down to my crotch(I timed and they are irregular cramps) I haven’t been to my OB since I was 35w and she didn’t check me for dilation then so idk if I’m dilated or anything. So far I haven’t had a bloody show or my water break but have been having a lot of discharge, peeing a lot, my back pain has increased since 2:00 today. Is it just Braxton Hicks or should I go to the hospital? Not sure what I should be feeling😂