Hey mama, those crampy feelings at 38 weeks are pretty normal, a lot of us experienced that as our bodies were getting ready! But the chills and the sleep disruption, especially if it's really bothering you, I'd check in with your OB just to rule out anything like an infection or early labor signs, kasi mas safe lang knowing what's happening. Maraming moms in our group had Braxton-Hicks mixed with actual pre-labor symptoms at this stage, so it's hard to tell sometimes! Try to rest when you can, at least the waiting game is almost over na.