Alah, baby yang aktif malam tu biasanya sign yang baby okay lah, jangan worry sangat! Tapi since you're approaching 40 weeks and worried, definitely check with your doctor or midwife asap, dia boleh scan, check cervix, and advise if perlu induce atau tunggu lagi, each person is different. Some moms dapat contraction dah dekat due date, some langsung zero tanda sampai labour start, my first time I was exactly like you, very paranoid, tapi when contractions came they came fast! Get them to monitor baby's movements closely and discuss your options, at 39+ weeks doctor usually akan have a plan with you.