Ay, mama, this one talaga kailangan i-check with your OB agad para ma-confirm everything is okay lang. Hindi kami dapat mag-assume about pregnancy changes, mas safe na marinig mo straight from your doctor kung normal lang yan or kung may kailangan i-monitor. You're 4 months na, so ang belly mo talaga lumalaki, but let your doctor check kung bakit ganyan ang feel ng tiyan mo. Bili lang ng peace of mind, di ba?