Hey there. I'm posting because I recently found out my fiancee is pregnant with our first child. We've been together for four years now and we've been through a lot of tough things so I'm sure that as a unit we're fine and we're both emotionally able to handle a child, we both have experience as essentially surrogate parents. The reason I'm posting is because I'm worried about passing on some of our psychological disorders onto our child. I know this seems like a stupid thing to worry about because you can not control it but I don't want to imagine my child going through the same things I've gone through or, to a lesser extent, the things my fiancee has gone through.

Is it normal to worry about things like this?
How can I try to stop this behavior?