Should I be worried!?!?

Mercadies • Married 9-8-12!! Have a daughter born in 2007 and a boy who was born on 2-25-15
I'm going to be 22 weeks pregnant tomorrow and I have been able to feel my baby boy move since 16 weeks but yesterday we didn't really move that much and so far this morning I haven't felt him and he usually is very active in the morning and I know if I call in and talk to my midwife or a nurse she is going to say everything is fine but I'm just so worried. Has anyone else had/have a very active baby then out of know were they stopped being so active inside you.