Oo naman, super normal yan sa pregnancy! Ako rin naging ganyan especially around 2nd and 3rd trimester, ang frequent bathroom trips and discomfort lang talaga ang culprit, kaya kahit putol-putol ang tulog mo, as long as you're getting enough total hours and feeling rested, usually okay lang yan. A few of us moms figured out na ang importante talaga is the total sleep hours mo per day, hindi yung consecutive, so your 4+4 is actually decent! But just to be safe, I'd mention it to your OB sa next checkup kaya they can make sure everything's on track with baby and you're not stressed or anything, since stress can also mess with sleep patterns. Karamihan sa amin nag-improve ang tulog once we delivered, so don't worry too much, your body's just adjusting sa pregnancy!