There are many causes of dizziness, and some of them may require medical evaluation and treatment. The physicians who will be qualified to discuss this issue with you include your primary care doctor
Common causes of dizziness include benign positional vertigo
, which is a disorder caused by mis-positioning of small sensory units in your ear. Labrynthitis is another form of dizziness that is caused by an inflammation of the inner ear, usually following a viral infection such as a common cold.
Rarely, dizziness may be due to a serious medical condition. These can include an acute stroke or a brain tumor, especially if accompanied by other concerning symptoms, such as dis-coordination, headache, or weakness.
It is unlikely that the dizziness is related to your stomach condition. I the case that your 'digestive problems' were related to a stomach ulcer
or other source of intestinal bleeding, chronic loss of blood could lead to anemia, which could cause fatigue and dizziness. If your bowel movements are occasionally dark black in color, this possibility is more likely.
As always, the diagnosis and treatment of your specific condition will require a physical examination by your personal physician. Scheduling an office visit with your primary care doctor is strongly recommended.