Mommy, importante talaga na i-check mo to sa OB mo as soon as possible, abdominal pain kahit parang heaviness lang, kailangan i-monitor ng doctor lalo na first pregnancy mo.
A few of my mum friends din nag-experience ng ganyan around that time, pero iba-iba ang reasons, could be normal pregnancy stuff, or something that needs attention, kaya talaga dapat sa doctor ka muna. Hindi ako makakapag-advise ng medicine o kung ano ang gagawin, pero go lang sa clinic para safe ka and baby mo, ha? You're at 19 weeks pa lang so marami pang months, better to be sure. Sending you hugs, sis!