Reggie - you are taking in a LOT of caffeine, and it's a diuretic! Wouldn't surprise me if you are dehydrated. About 70% of North Americans are, and don't even know it.

Plus, all the caffeine can artificially raise your metabolism, as it's a stimulant. Maybe try easing down to very little caffeine, as this can really mess up your health (for one, your heart would be beating faster than it really should be).

Look up 'caffeine' on Google and see what you find out.