Welcome 7897 -
I managed to keep my drinking a secret for a long time, too. Things looked OK from the outside, but inside, I was a mess. Waking up with anxiety everyday was the worst.
A lot of what you describe sounds like alcohol withdrawal. You might want to consider seeing a doctor. I hope things work out for you with the job - I think when we're honest about getting help, most people respond in a favorable manner.
Keep reading and posting!:ghug3