need some insight please

I had a fall last Monday now I fell right onto my bump, I felt everything including the baby squash as I fell...im now 19 weeks 1 days today, went to the hospital for them to say they will put me on the monitor.....it didn't happen they used a doppler and she couldn't find the baby straight away until I told her were the baby was myself, baby is fine. ok then went home rested for few days went on as normal, but....since that fall baby has been having less movements than usual, he or she was always active now I feel him or her about twice a day if that now, I also think I have the anterior placenta again, but could feel my other 2 pregnancies as good as any other. would there be a reason for baby to slow down the movements at all, and should I speak to the hospital again