baby moving

I'm 20 weeks 3 days pregnant and I don't feel my son moving around a lot. My Gyno said that I should be feeling him move at least 1-2 times a day. I feel him maybe once every few days 😕😳Is that normal? Or should I be worried? At my anatomy scan she said everything is perfect and he's as big as he should be and everything seems to be developing perfect. I'm just really anxious and it's been bothering me😭