I am a musician, I have had type 2 diabetes for 6 years,I had a heart attack 20 months ago and had 1 weekend off work, then I put 2 discs out of place and had sciatic pain and just kept working then about 9 months ago I just got so exhausted I couldn't do my job properly so I found someone to replace me in the band and got a sick note from my doctor. so I have been off work for 7 months I recently had to go for the ESA assessment and they say I am fit to do some form of work on the assessment she did notice I had problems with my balance and told me to go and see my doctor, he did blood tests and found my B12 to be 93pg/ml. and gave me 5 injections over a 2 week period, I went to see the doctor today to see if I could get a sick note again as I still feel exhausted and ache, I was told I couldn't get a sick note as I had had the injections, I asked if that had improved my B12 and the doctor said they didn't know. I'm amazed. I am 63 years old loved my job and cant wait to return to it. My smptoms are muscle cramps, tiredness, weakness, back pain, loss of appetite, loss of strength,tinitus, loss of sexual ability drive desire, weight loss. I have been on Metformin for 6 years , I have recently stopped taking atorvastatin please help what can I do.