Hey, everyone!

Basically, I'm sick every morning and I'm not sure why.
I started college 3 weeks ago, and the first week I was fine, but from the second week on, EVERY morning I have woken up with severe stomach pain and (sometimes) nausea. I've had to start getting up a lot earlier than I would normally have because I've got to use the bathroom every 3 minutes for half an hour, and it's really becoming more than just an annoyance.
What's weird is that I'm not sick at all the rest of the day. It's just for that half hour in the morning, and the rest of the fine I'm completely healthy.
I thought it might be nervousness for awhile, but I wasn't sick at all the first week, so why would it suddenly start a week after the fact? Beyond some romantic tension, there isn't really anything stressful going on in my life so I can't think what could be causing this.

Has anyone experienced this kind of thing before, or know how to make it stop?

Thanks, everyone!