Hey mama, normal lang yan sa 27 weeks, Braxton Hicks contractions yan, parang practice contractions ng uterus mo, pero para sure at matulog ka ng mahimbing, mas better kung i-mention mo ito sa OB mo sa next checkup, lalo na kung may sakit o irregular yung paninigas! A few of us moms had the same worry first time around kaya totally gets it, just relax, drink lots of water, at rest mo lang when it happens, pero doctor check is best talaga para sa peace of mind mo.