I drank two energy drinks last night, could that be why my stomach is hurting today?

I don't normally drink energy drinks, ever. But last night I had to pull an all-nighter, and over the course of of about 10 hours I drank two energy drinks. They weren't like super high energy drinks like redline or nos. It was the mountain dew brand called Amp, which I seem to think isn't as strong as others, but I might be wrong. Could this be why my stomach is bothering me today?