Fear!!

25 weeks. And going threw alot of dread and fear that something is wrong with my baby. I have felt movement, but not as much as usual. Not only that. My belly has went from big and solid. To soft and almost flat. This cannot be normal can it??? Anyone else experienced this where everything turned out fine. That can shed some light for me. :-( :-( i hate freaking out and feeling so unbelivably stressed