I Have Been On Buprenex For 10 Years And Never

I have been on buprenex for 10 years and never increased dosage I have taken 2.5 ampuls a day split into four shots daily no issues until about a month ago when all of a sudden I started having withdrawal symptoms . This went on for four days so I thought I would just quit taking them and did so cold turkey Well I went three weeks and the withdrawals were hell no sleep diarreah the entire time burning skin the works Most of the physiacl symptoms have subsided but the anxiety came so bad I couldnt even think straight. So last night I couldnt take it anymore and took two shots one to try to feel better and total took a Half of shot and a.7 shot for a total of .4 mgs did feel a little better for awhile but still could not sleep and I took a half shot this morning. At work I then became extremely depressed in my chest and head and still dont feel well In fact I feel horrible. Im not sure what to do since I was off for three weeks and feeling terrible but then when I took the meds last night and this morning I still feel bad. What should I do to feel normal again.