Why don’t I feel/see my baby

Tori

So I am 16 weeks and I am starting to get concerned because I am still not showing at all, and not gaining weight like I keep seeing I should be. I’ve had 4 scans now and baby looks very healthy and moves around A LOT. But I have not felt him at all. This is my first so I think I’m just super paranoid about everything. Any advice would be appreciated!