Treating Pre-Existing Anxiety while Pregnant?

I was diagnosed with GAD (Generalized Anxiety Disorder) when I was 11 years old, by 15 it was full blown Panic Disorder, & at 18 I went through a very traumatic experience & now have PTSD (Post Traumatic Stress Disorder). I'm 20 years old now, 6 weeks + 5 days pregnant with my first child & it seems like the anxiety is getting worse. I cannot take the medication I am prescribed, it can cause permanent damage to my baby. I was on a really good streak, I went a whole 8 month period without taking any of my anxiety medications & having no panic attacks at all. Until about a week before I found out I was pregnant. I plan on talking to my OB about this when I go for my first appointment on May 22nd. But has anyone else had panic attacks or anxiety while pregnant? What did you do for it? Any advice??