I am currently taking 2mg of Klonopin on an as needed basis for severe panic attacks. My doctor says to go on the lowest dose possible, however, if I am not able to it would be worse to spend the entire pregnancy in a panic state. I know this is class D drug. Anyone in similar situation? I'm terrified of birth defects, but i'm terrified of these anxiety attacks. I also take Lexapro which works great for depression but not anxiety.