Oo, normal lang yan at marami sa amin ang naranasan yan, lalo na around 4 months when baby is more active and positioning changes, pero since it's your first time, mas okay talaga kung i-mention mo sa OB mo during your next checkup para ma-rule out anything serious at matulog ka ng mahimbing. A few of us tried warm compress or adjusting position when it happens, but your doctor will give you the best advice based on how you're feeling overall!