Genetic disorders

My first child that I lost was diagnosed with oseogensis imperfecta type 2 
It's was really depressing for me 
Neither my bf or I carry the gene so that's good news but I really wanted my baby I knew the gender already had a strong bond and it was a really hard struggle I had to go through.
I am trying to get pregnant again but some times I worry what if my next baby comes out with the same thing or something else 
Or what if I finally conceive a healthy baby and loose it :(.
When I first conceived I was more worried about having a miscarriage I had a Doppler and I would use it all the time to make sure my baby was still alive.