Inconsistent movement

kay

Hi! I’m 20 weeks on the dot today. For the last 4-5 days I’ve been feeling some sporadic movement. I got one definite kick where I actually saw my stomach move a few days ago. Today I haven’t felt much of anything. Is that normal? I know it’s normal to not feel movement til 22-24 weeks, but if you start to feel it is it okay for it to stop/be less at this stage?