Normal lang yan, sis! Yan ang Braxton Hicks contractions, practice contractions lang ng katawan mo to prepare for labor, happens a lot around 30 weeks onwards. Pero kung ang paninigas ay regular na very painful, may spotting, or may discharge, or parang labor pains na talaga, definitely check with your OB na para sure lang, kasi importante laging i-monitor ang buntis mo especially this far along na.