Ksenter -- I agree with Christina's suggestion that you go talk with your professors right away, and let them know not only that you've been diagnosed, but that you really do care, that you know that you're missing out on your work, etc. They are there to help and it really isn't uncommon for first year college students to hit a period like this (ADD or not) -- the workload at college is really different than high school, the distractions are greater, and for the first time you're having to do it on your own.

Don't give up -- instead go in there, ask about extensions, final deadlines, all the upcoming and missing assignments, even extra credit, and write it all down. Then in a calmer moment, what I find helps (after a bit of chocolate) is to take all that information, and organize it, breaking it into smaller, more manageable pieces and then with a realistic calendar of your days for the coming week, begin to see if you can put it together. Instead of maybe sleeping until your 11 o'clock class begins, could you get up at 9 and read for an hour or so? Between classes, could you go to the library to do some research (or whatever you have to do)? The thing is to break it into realistic pieces so it won't seem so overwhelming. Even leaving notes on your door at night which say "Take your English paper to class today" -- anything like that which helps you to feel in control and get it done can be great.

And, after you talk with them, if it seems as though there's no way you can catch up in one class, there's no shame in being able to admit that it's a bit too much and find out if you can withdrawal from the class without penalty and take it next year or even over the summer.

You were obviously smart enough a student for the college to believe in your abilities and that hasn't changed. So don't give up!! It may just be that typical freshman angst over the demands (academic and social) and with a little organizing and hard work in these last few weeks, you'll surprise yourself.

Best of luck!!