Movements

Emma :)
Hi ladies :) 
I'm currently 24+1 and have been feeling my little girl move for about 5 weeks now. 
Up until 2 days ago, I felt her move around quite a lot and she was quite active. Now though, she doesn't move around much anymore :( I know that sometimes the way babies lay hinders how much you feel them, I was just wondering if anyone has experienced this?  
I saw my midwife today and she felt her and we heard her heartbeat, which is still nice a strong, but I still can't help worrying :( 
I lost my first baby at 11 weeks last November and it is constantly in the back of my head that something bad is going to happen :(