Oh sweetness.
3 weeks ago I felt quite like you. I wanted to die, it was all I could think about and I just laid in bed and cried for days.
I went to my doctor. He arranged for a mental health unit to assess me, I went to the appointment that day and talked and talked and talked. They listened to me and believed me and it was a weight off my shoulders.
I started a course of beta-blockers for my anxiety. They made me feel a bit tired at first but after a few days, no problems, and for the first time in my life I can handle things without the terrifying panic-y feeling all the time. 
I had home visits from the mental health crisis team, so I got to talk about how I was feeling with someone, everyday. I told dh, and he has been wonderful. In fact I think it has brought us closer togehter.
Wanting to drink is a sure sign that you are feeling unable to cope and you need to ask for help. Don't worry, I was using sleeping tablets instead of booze to cope but it still amounts to the same thing.
Please ask for help. Send me a private message if there is anything you nwould like to talk about / ask off board.