Hi, Thanks for your query. 
After going through your query I came to know that you are suffering from chronic 
backache. It may be due to vitamin and trace element deficiencies specially vitamin D and vitamin B 12. You need to done 
MRI to rule out other causes.
Back exercises, neurotropics such as mecobalamine and analgesics (
DICLOFENAC 100 MG SLOW RELEASE TABLETS) give relief. 
Sometimes vitamin D deficiency can aggravate this so serum vitamin D test is advised if it is low than vitamin D supplementation will be required. 
Avoid long continuous standing. 
Sit in a straight posture. Eat milk, fruits and green leafy vegetables daily.
Your swollen abdomen and 
frequent urination may be related to 
anxiety due to backache. Alprazolam  help in reducing anxiety.
You can discuss with your treating Doctor about it. I do hope that you have found something helpful and I will be glad to answer any further query. Take care.