Active baby at 38/39 weeks?

SF • We have a 5 yo and it took about 4 years of trying for our 2nd, due in July.

This is my second child, but my first was breech so this pregnancy feels totally different. I'm trying to figure out if I'm having Braxton Hicks, or what might be going on. The baby is moving around a lot right now- like stretching his butt out and legs out. I have cramping in the pelvic region.m, and of course overall tightness (which I think is BH?). I'm almost 39 weeks along. I have a scheduled c-section next Monday. I'd say that I have a pretty high tolerance for pain. Aside from the cramping, this isn't painful, just feels very strange.