Mama, please go to the hospital or call your OB right away, 8+ hours of on-and-off pain at 38 weeks with a very tight tummy needs to be checked now, hindi pwedeng maghintay pa. Even though your cervix was closed earlier, things can change quickly, at kailangan ng doctor na makita ka in person to make sure everything is okay with baby and you. Sending you so much courage, you're almost there na!