Baby movement

Hi...I’m a ftm and roughly around 18w4d-6d, I would feel that ball in my uterus when I would lay on my stomach. I’m now 19w1d and I don’t feel it as much. I had a previous MC at 11w1d and so I have some anxiety and worry. Is this common? My anatomy scan is next week and I just want to see my baby and know everything is ok.