I had something like this in January. I would get quite n* every night, had some loose stools, little to no appetite. Also a college student. I lost about six pounds unintentionally. I went to the health service, and they were pretty useless (gave me a sheet that said "You have viral gastroenteritis.") It got better on its own eventually. Try to eat when you are not n*. Stay hydrated. Take it easy on yourself. If it doesn't go away in another week definitely try to get another opinion, or of course if you feel like it's really bad then you might want to see an MD sooner.