Really scared...

My name is Allie and I'm 21 years old. This I'm 5th pregnancy. I've had 3 miscarriages in the past 2 years.

I'm scared of miscarrying but mostly terrified of if my baby will be okay when they are born. While I was pregnant and didn't know yet I was still shooting Heroin. I quit a few days before I found out. I was detoxed on Subutex and since they found out I was pregnant they are wanting to keep me on it. It's just scary everyone keeps telling me my baby is going to be in bad shape. But doctors are telling me it will be okay. Any advice?

I'm almost 2 months clean today.