baby movement patterns

I am almost 21 weeks so I know consistent movement isnt expected until later-- around 26 to 28 weeks but I was just curious about everybody else's baby movement patterns. Some days I feel him moving around like crazy and other days I only feel him a couple of times a day. I am not too worried because I know this is somewhat normal and I have a Doppler so I check in on his heartbeat once a day or once every other day. But I was curious what everybody else was dealing with around 20 weeks.