How long are you having heart problems?
Are you taking statins?
Some heart problems, are known to produce reduced levels of CoQ10. Also statins reduce the levels of CoQ10.
Severe deficit of Q10 produces gum bleeding. In fact you find now gum care products that include Q10 in its formulation.
Jesus
bleeding gums CAN be a sign of oral infection, but there can be other causes such as medication or brushing too hard with a stiff brush. It does appear that there is a link between heart disease/strokes and oral infections. The exact reason is not known but in research groups, the patients who suffered a stroke/heart disease were more likely to be found with an infection in the mouth. One theory is that the infection gets into the blood stream and causes inflammation of the arteries, the starting point of atherosclerosis.
If you have no idea why you are suffering bleeding gums, it would be worth a trip to your dentist who can eliminate the problem very quickly. I remember ten years ago I had an attack of gingivitis, the dentist just washed all my gums with a jet of highly oxygenated water, polished the enamel and it was gone. Gingivitis makes your gums swell and bleed.