Anxiety

I have always been an anxious person. I was taking Xanax as needed before I was pregnant and quit as soon as I found out and I was fine. Well now I'm 34+ weeks and my anxiety has hit the roof. I know I can't take my pills but does anyone have any helpful tips? Can I ask my OB? They didn't know I was taking Xanax because it was only on an as needed basis and didn't think it was important. I cry so much and stress about every little thing lately. I'm losing it. I feel so bad for my 6 year old and my BF. I feel so annoying.