Drug advice for anxiety/panic attacks?

I will preface this by saying I have a psychiatrist, but it's hard to make appointments with him and he's not the best psychiatrist. I know this is not a substitute for that! I will work with my psychiatrist on these issues soon but wanted some other advice. Some background on me: I have anxiety, panic attacks, GAD, OCD, some phobias. I'm looking for something to stop the panic attacks. My mental state has been increasingly more and more negative over the years and I'm trying now to work on that. I first took Lexapro 10 mg which was a life saver in college. After about 4 or 5 years, and after going up on 20 mg Lexapro and Buspar and feeling no difference, I reluctantly switched to 50 mg Zoloft. At first, it felt great. I felt better. But over time, I noticed dry mouth, excessive thirst and constipation issues. I've also been on birth control for 6 years. I've also been on .5 mg ativan as needed for years as well. I try to take it no more than once a month but recently, through the stresses of moving and a break up, I've been taking 1 – 2 mg a day for 2 weeks. I want to find an alternative that is fast acting because I'm worried about dependence on benzos. Finally, when I experience increased anxiety, I lose my appetite and eat less and get anxiety about food. But I know that not eating enough is a large trigger for my increased anxiety. My psychiatrist said it was okay to up my dose from 50 to 100 mg zoloft. I'm worried about increased side effects or how long it will take to readjust to the new dose. I've had a lot of ups and downs in anxiety with zoloft and felt more stable overall on Lexapro. I'm not sure if that is the medications though or just life stressors. Tl;dr Used to be on Lexapro. Worked great. Have been on zoloft for the past year. Mixed results. Currently upped my dose on Zoloft from 50 to 100 mg and have been taking ativan daily for the past 2 weeks and not eating much due to high anxiety. Looking for any advice on medications that work quickly for anxiety beyond Ativan.