seems like mild shock. IF it only happens afetr extreme circumstances it is most likely shock, Your second incident was porbably due to hypovolemia, alchol blocks renin-angiotensin-aldosetrone which blocks the bodys ability to reabsorb water, thats why youi pee alot wehen you dirnk. thus without being able reasorb water your blood volume is dropping to dnagerous levels.