Uy mama, I understand you're worried! But please see your OB soon para ma-check kung ano talaga ang nangyayari, 20 weeks is important na i-monitor closely, at mas okay na marinig mo directly from your doctor kung normal lang or kailangan ng extra care. In the meantime, a few of us pregnant moms noticed na ang pag-stretch ng uterus and ligaments can cause some discomfort, but iba-iba talaga ang bawat pregnancy, kaya you really need that check-up. Breath lang, okay ka yan!