Worried

I used to feel flutters and little rolls about 16 weeks up until about 18 I haven’t felt anything since I don’t even feel pregnant anymore,I see everyone posting about feeling their baby move and it makes me sad that I don’t feel baby anymore, is it normal for them to go long periods without me being able to feel them? I’m 20 weeks tomorrow I thought I would be feeling baby stronger now but it’s been the complete opposite