What should I expect?

I, with little tolerance, stupidly started taking Subutex, snorted it daily for about 1.5 weeks. This is my 5th day off of it- withdrawal really hit me yesterday. I am feeling like death. Cold sweats, twitching, can’t sleep, hard to breathe like my anxiety has never been this bad. Nausea. Headache. I have a little left. Just 3 pills. They are 8mg. Should I try to take just one line to help withdraw? Or just white knuckle it? How long will this last? I want to be good to start my new job next week. What can I expect? What should I do?