Talk to General Physician on Depression & Stomach

dear doctors sahiban i have depression from the last 12year's, brain problem due to stomach,or,stomach problem due to Brian,i don't know because I'm facing lots of problems of these two parts, due to Brian"like can't imagine anything , forgetting, scaring ,memory loss, tension,stress,mind freshness, sleeping problem negative thinking etc & due to stomach" gass problem,increasing belly, stool problerms, indigestion,Acidity,etc. I went to many doctors but no one solved my problems, Is there any doctor who can treat me with guarantee or then Reduce this disease by 90/80%