it depends on if your fiances problems are hereditary. I they are, then there is a chance you could have children who develop these, or similar issues as they grow up. but i will say this: I have anxiety issues that are hereditary, and I have four grown childern who show no signs of problems. If I were you, first i would talk to a doctor, and ask him if your fiancee should stop taking these drugs while trying to have children, as well as about what you have heard here.
Thank You BlueCrystal, I will have that in mind. Now I am asking that to some, but nothing is 100% sure that a baby come out 100% healthy. And I don't know yet if that is hereditary.