I'm in the US, but I would imagine that your doctor is required to maintain confidentiality regarding anything you discuss with him/her. Also, there are probably resources available, for example, in-patient detox that could save your life.
Your employer might be obligated to provide you a brief leave of absence, too.
I completely went through the same thing. Once I detoxed for 10 days in-patient everything was a million times better. I felt hopeful and had started treatment with AA meetings and group therapy. I don't really go to AA meetings anymore, but delving into the program and learning about sobriety was invaluable.
You can get better. There's hope, even if you feel like there's no way out. There really is. And if your family is supportive, tell them what's going on. They want you to get better.