Mama, please go to your OB or go to the hospital right away to check this, 37 weeks na kayo, so any consistent belly pain needs to be checked by your doctor agad, hindi dapat i-guess. Better safe than sorry! A few of us moms have experienced different types of pain towards the end of pregnancy, kaya important talaga na ma-evaluate ng doctor kung ano exactly ang nararamdaman mo, baka practice contractions lang or baka something else na kailangan i-monitor. Hugs, and please don't wait, go see your doctor today, okay?