Hiii mama! Ganyan talaga ang ibang babies, some are just super active sa loob, lalo na pag malapit na sa 6 months, and it's usually totally normal! One of my mum friends said ang baby niya non ay nonstop din, pero ang panganay niya tahimik lang, so honestly bawat baby talaga has their own personality kahit nasa tummy pa lang. That said, since this is quite different from your first pregnancy, mas safe kung i-mention mo sa OB mo next visit just to be sure everything's good, hindi para mag-alala ka, pero para sa peace of mind mo talaga!