SO SCARED!!!!!

I'm 16w pregnant today this app sikes me out a lot I have heard my babies heartbeat at 9w and 13w and I'm just so scared I'm gonna misscarry this is my first pregnancy and I never know if I'm doing something wrong or something I should be happy which I am but I'm terrified at the same time that one day there want be a heartbeat I feel so heartbroken for the ladies that have experienced a Misscarriage and I don't wanna go threw that heartbreak cause it took me over two years to get to,this point I just,don't wanna loose my baby😪😥😭😢