I’m 18w5d today, usually I feel my baby boy move after I eat or when I lay on my side, but today I haven’t? I’ve called my doctor and she said he could just be hiding behind my placenta (I have an anterior placenta) but I still get so scared when I haven’t felt him move. I’m a FTM and have no idea what to expect.. should I be concerned?

(Here’s my little muffin at 16 weeks, hes my world already ❤️💙❤️💙)