Hello everyone! Girls, could you please tell me if pregnancy is differ…

Hello everyone! Girls, could you please tell me if pregnancy is different in the second trimester? Starting from how I feel and ending with kicks... My daughter constantly let me know about herself, the belly was there, though not every day, but it walked sometimes) She was born very active, but my son scares me sometimes. Tomorrow will be 36 weeks, and the activity compared to the first pregnancy is significantly less. Ultrasound shows everything's good, no contractions, last week we had an EKG, so they told me that after resting for an hour, they said that there wasn't enough movement, they suggested maybe she's sleeping or something else. They offered to lie down for another 15-20 minutes,