How to ease worries

So I'm a total worrier, like big time. I'm 27+3 and my new worry is feeling the baby move. I definitely feel him move a lot but there's days where I really don't or he doesn't start moving until later in the day. I know babies sleep most of the time but I start to freak out almost every time. I hate it and have a while to go and don't want to waste it being worried. Anyone else feel like this often or have any advice?