reduced fetal movement


hi ladies I'm 27+1 pregnant. My baby was super active last night until about 11.30pm. it's now 9pm the next night have only felt him maybe 3 times since then not sure if it was even him as I have an anterior placenta so light movement feels like nothing. he was so active pretty much all last week. could he just be having a lazy day or do you think I need to get checked out?