Ay, normal lang yan during pregnancy, sis! Ang tagiliran mo nag-eexpand kasi lumalaki ang baby at uterus mo, kaya may pressure at mild pain doon, maraming kaibigan ko na nakaranas nito, lalo na sa second and third trimester. Pero pag sobrang sakit na or may ibang symptoms, better check with your OB na lang para sure, okay? Stay hydrated and try mag-rest ng kaunti, usually lumalieve yan ng sarili niya.