Oo normal yan, mama! Around 19 weeks yan na ang Braxton Hicks contractions, yung practice contractions ng katawan mo, kaya parang tumitigil or ninigas yung lower belly. A few of us first-time moms freaked out din sa ganyan pero it's just your body preparing for labor, pero syempre kung may pain or bleeding kasama or takot ka talaga, mas okay consult your OB lang to be safe, kasi better peace of mind.