Is it okay to eat goldfish with an upset stomach?

Go ahead: Each of us, on the road to adulthood, passes many milestones of immaturity. Swallowing a live goldfish is a college prank; it's cruel to the animal and someone may call you on this. I can't promise it won't make your stomach more upset. Don't drink to excess or allow others to do so. Help people who have been drinking protect their airways. Best wishes.

How many?: If you're talking about eating the cracker variety, moderation is key, particularly if you already have a queasy stomach. I'd say "think again" however if you're planning on eating the swimming kind of goldfish!