Are certain foods causing the symptoms to worsen? Like the burping, pain in your chest, etc?
I would encourage you to meet with a doctor. In the meantime, try to limit sugar intake, increase your water (Can even mix in zero calorie mixers), and get a little exercise in. Exercise dilates your veins, which means your heart doesn't need to work as hard. I realize that's generic sounding, but from the sounds of it, i.e. things getting worse, you may need to make a change soon to avoid anything bad happening.