Still haven't felt the baby

Amanda • 3rd time mommy in my 20s
I am 19 weeks 3 days and this is my 3rd baby and I still can't feel it move. It's driving me crazy. I have an anterior placenta which I'm sure is to blame.....but at the same time I haven't gained any weight either. Every appointment so far has shown the baby is ok but I am getting worried. We get an ultrasound the 21st but it seems so far away...any other mamas in the same boat?