Hi mama! That's definitely something you need to check with your OB right away, kahit parang small thing lang, mas safe na malaman from your doctor kung normal ba o may kailangan i-monitor, lalo na ngayon na 3 months ka na.
A few of us moms experienced different things during pregnancy, kaya talaga ang best person to ask is your doctor para walang alalahanin ka. Please make an appointment or call your clinic agad, okay? Sending you hugs!