Hey mama, normal lang ang occasional tummy aches na yan sa 37 weeks, usually Braxton Hicks or ligament stretching lang, pero since you've had it for a week, mas okay talaga na i-check mo pa with your OB just to be sure, especially since this is your first baby and you want peace of mind, hindi ba? Good na walang UTI based sa lab mo, and the baby's still moving, those are good signs, pero your doctor really should assess if those pains are practice contractions or something else na kailangan bantayan, kasi seryoso na ang stage na yan ng pregnancy.