anxiety/dep from quitting smoking

[SLCRFRD]

I quit smoking beginning of March 2016. I am determined not to go back. I told myself whatever happens happens-I'm not going to die right?  Not so sure about that now.  Anyways, I started so young that I guess I had no idea I had depression and anxiety. It does not surprise me though as that is the reason a lot of people smoke. Ok so at first I was crying uncontrollably. Went to Dr. and they prescribed Cymbalta. Works great for my depression , however, makes me feel like my nerves are right under my skin. I want to come out of my skin. I thought it was just anxiety until I forgot to take it 1 day and did not feel that feeling. So I stopped taking it. a week later and I want to cry again. I also feel more like I am in control of not smoking while on Cymbalta. 2nd issue- I have woken up at 2:30 am every morning since I quit. The Cymbalta did not help me sleep, so my Dr. prescribed Seroquel XR so it would kick in in the middle of the night. I take 50 mg and within 2 hours I have to be in bed. I am super groggy in the mornings. So my Dr. decided to switch to regular Seroquel. Took it last night for the first time and was up all night. Fell asleep around 4:30 am and had to get up for work at 6:30. I am tired of being sleep deprived and anxious. I do have irregular breathing as well since I am not taking a whole bunch of deep breaths inhaling like I was when I was smoking. I often think I can end all this misery by going back to smoking-no anxiety/depression/sleep great.....But I'm not so I need to get this figured out. Suggestions?