Thanks for posting your query.
It seems like you have chronic gastritis
. I hope you are on the right medications for this. This can be the cause of your back pain
For your lower back pain and pain in the pelvis, it is advisable to get an ultrasound
scan of the whole abdomen. A hernia
can be detected by this too, if present.
Prostrate infection can be treated with antibiotics.
I hope this helps.