Advise please. Medications while pregnant

Casey
I've just recently found out I am indeed pregnant. If some of you have seen from my previous post. And coming off of medications especially for anxiety issues is really tough. 
I have had a form of ptsd since I was 19. Being 26 now I have taken various different medications throughout the years. Most recently I have been on clonazepam twice daily for attacks. 
I know this is a class D substance and that is what worries me most about having it my system at all while being pregnant. I am only 6 weeks right now . Has anyone else had to face issues like this and how did you donut and what worked for you?