I have an addiction to Oxycontin,and i have an appointment to start suboxone treatment in twodays?

Im really really nervous!I started using oxycontin about a year ago because i had( and still have) a severe back/shoulder/neck injury due to being T-boned in an accident. I tried all other alternatives first,and i went to the chiropractor,several doctors, and now i am currently still in physical therapy.
Nothing helped. I eventually started taking oxycontin to relieve some of my horrible pain,as no doctors were doing anything else for me and i just couldnt take it anymore. The pain is stillthere, and even the oxies dont take it completely away. I didnt even realize how quickly i had become addicted. I started a routine...i would take a line when i woke up, one at 4,one at 7-8, and onebefore bed.Every day. Still do.
Even though my pain was and is still horrible,i tried several times to quit because of the money and emotional connection involved with the drug. I was just weary of "needing"this pill and almost dying without it.
Every time i tried to quit i had severe
anxiety... almost freaking out and couldnt breathe just thinking about when i would get more. A second lasted a whole day. My stomach was in horrible knots. Other stomach issues. I couldnt think straight or function properly... severe muscle pain and extreme tiredness without being able to sleep. My life was on hold until i got another pill.
Anyway, i finally made an appointment to go see this psychiatrist who does suboxone treatment.But i'm soo scared. I can't handle the withdrawal symptoms, i just cant, and if it doesnt take those away i'm going to start using again very soon. Is it going to help me? I have to work all weekend...will i even be ableto?Will i be anxious? Thats the worst... i just needto be abletofunction. Im very scared. Has anyone else been through this and know what to expect, willit take all of my withdrawal symptoms away? will i be depressed? I would appreciate any information...thanks greatly
OH and what about my pain....whatsgoing to fix that? if i cant take these im going to be at a lvl8 of pain...but i'd rather have that almost than spend so much ofmy money each week on these pills cuz i have no prescription and its expensive. I think i'm just screwed. Either im addicted and in minimal pain but spending lotsa money, or i'm not but still in excruciating pain that won'tgo away... help????? Will the doctor give me something for my anxiety and to sleep also?? Info ?? thanks!

: http://alcoholdrugstreatment.info/i-have-an-addiction-to-oxycontinand-i-have-an-appointment-to-start-suboxone-treatment-in-twodays