Hi kroumimper ! Don t want to scared you but stop taking energy drink better take lemon tea, juice, fruit , curd, glucose drink. Now about stool ! Are you sure it is blood, not any red vegetable that you eat. You are saying when ever you eat, after some time your stomach hurt. It can be stomach ulcer. We are not sure. Now what to do! take omaprazole once daily before meal. if stomach hurt take dicyclomine tab. Stop eating to cold food, spice, too hot food. If fever take paracetamol tab, burning sensation in urine take doxycycline tab, after doing every thing still hurts need a visit to doctor for checkups. So take care get well soon. Bye.