Baby's not moving 😳😳😳

So I am currently 27 weeks and 5 days and I've noticed that my baby doesn't move when I take my prenatals. I'm kind of worried because usually he's moving by 630 am and usually moves for 2-3 hours until he goes back to sleep. This week he hasnt, but I'm not gonna lie I have forgotten to take my pills and the doctor says I'm doing perfect. But it just scares me because he went from moving all day to barely moving. Has this happened to anyone else or am i just paranoid?