I would check out a naturopathic doctor because western doctors don’t really treat gut flora disorders.
Why are you interested in going to a doctor and what are you trying to get out of it?
The gas is likely due to deficiencies in HCL (hydro-chloric acid). The brain fog is likely due to the toxins not being detoxed properly from the body (what are you taking to support your liver?)…we recommend detoxing via sweating (sauna, hot tub, steam room, etc) to remove the toxins from the body and this reduces brain fog.
Heart palpitations are caused by the toxins as well…so you need to detox.
Calcium and all mineral supplements are important on the diet. Keep in mind that too much calcium can strengthen your blood vessels/veins and this promotes cholesterol/plaque buildup in the body which can lead to heart problems.