What should I do if I have a stomach ache ?

I had one the last hour of work and I felt like pukeing. I work for 10 hours night shift and I thi k I got it because I drinked a full throttle energy drink and a 5 hour energy but not at the same time it was like 2 hours apart and u have work today and my stomach still feels weird so what should I drink or doo to not puke and relive the stomach ache.