I just got a stomachache like I was going to have diarrhea. While going to the bathroom I started feeling weird - the roof of my mouth got tingly, heart was pounding, started sweating and feeling a little gray.  Got thru that a few minutes ago.  Still feel a little weird.  Roof of my mouth feels a little numb and tingly, and the back of my throat.
HI. This is a severe form of Gastroenteritis wherein one looses all he is important water and electrolytes in the dead-space or also called as third space - here in the intestines. This is Chat Doctor.  Rush to ER to get electrolyte and water imbalance treated, investigations done and to get appropriate antibiotics and supportive therapy.