Medications during pregnancy

Okay, so I have severe generalized anxiety disorder and am on 100 mg of Zoloft and

.5 mg of Ativan daily. I have tried to wean off the Ativan since I became pregnant, but am having a very hard time doing this. I can’t sleep and I feel like I can’t breathe. It’s so tight in my throat. I know Ativan is a Class D drug, but I take a very small amount. Please no mean comments. I would just like to know if anyone else has had or is having this issue? Am I alone? I would love to hear your feedback. I am currently 5 weeks and 5 days pregnant. Has anyone taken Ativan while pregnant and everything turned out okay?