I am 38 weeks and I've been having minor contractions since 8am. Kind of regular but not. Idk how to explain it. But the pain is mostly in my back. I feel like my hips are ripping apart. I am also getting an occasional burst of sharp pain in my lower uterus. I've been in so much pain, it's making me vomit. But since my contractions aren't "regular" or "steady"... Should I go to the hospital or not?