Trying to stay positive

I had two previous miscarriages after my first baby was born she is now 2 years old I'm currently 19 weeks and I'm still scared I'm gonna lose this baby too! I try not to think like that it's just to good to be true we getting our apartment in October things are going good I'm just waiting for something bad to happen and I can't shake that feeling 😔 don't get me wrong I'm enjoying everything good in my life right now I just know there is a catch somewhere.