Loote, May I respectfully propose an alternative theory. Could your mind have been a victim of so-called "Reverse Psychology"? You could be so scared that you are gay that when you saw your co-worker's dingdong in the restroom, your mind wanted to squelch your innermost strong undercurrent of homosexual desire that was subconsciously bubbling to surface, hence, the violent reaction that caused your stomach to churn, which you thought was the affirmation of your heterosexuality, but actually, it might've been exactly the opposite. So, my friend, you COULD be Gay after all. Just a theory ;-)