Hi.
Thanks for your query.
Noted the history and understood your concerns.
Multiple symptoms of stomach ache on left lower side, lower back pain, tiredness,
indigestion, feeling sick often and having trouble in sleeping can be due to the following reasons:
This may be related to colitis that is inflammation of the colon the cause needs to be found out by stool tests,
colonoscopy and biopsy; and therapeutic trial with an antibiotic,
metronidazole and probiotics.
If there is full relief, nothing more needs to be done.
If there is no relief, further evaluation by a CT scan and tests needs to be done and an opinion of a Gastroenterologist needs to be taken for proper diagnosis and management.
The lower back ache can be due to colitis or the local causes like
arthritis of inter-vertebral
disc prolapse causing the pain.
Once the intestinal problem is treated the tiredness and other symptoms may go away and you will have a normal life.