Is it normal not to feel baby move for a few days when it's still early?

I felt baby move for the first time a couple days ago but haven't felt him since... I am 19 weeks, 5 days and I know he still has lots of room to move around in there so might just not be close to the surface but I just wanted to check and see if other people experienced not feeling baby again for a little while after the first feeling of movement... I know that he is okay because I have heard His Heartbeat with my Doppler but I really want to feel him move again!