A couple days ago I had stomach cramps, wasnt bad enough to even worry about so I ignored it and continued on with the day. I also felt like throwing up, but wasnt strong enough for me to actually throw up. That night I was about to fall asleep when the stomach pains got so bad I couldnt bear it. Then I got really bad diarhea. The next day I continued to feel a bit wierd, stomach cramping. Then right after I ate dinner I almost threw up, running into the bathroom with my head over the toilet, but nothing again. Today I just finished eating breakfast and right after I'm done I got incredible stomach aching. I mean this was bad. What is it? My sister also said yesterday she had stomach aches and going to the bathroom a lot. Could it just be coincidince? or could we have ate something bad? but then why would it just be me and her, why not my parents too?