No judgement here, we've all been thru this in one form or another. I had the same problems at college and had to leave for a year while I got my act together. The good news is, I went back to my own beloved college.

Now, telling Mom. It's a must, but if you have been this sick , are you sure your Mom hasn't noticed some problems? Did you go home for Christmas? Have you faked it so well on the phone and during the holidays that Mom couldn't see even the tiniest bit wrong? She may already have a clue.

It's still necessary. Start with the lesser things. Mom, my depression has gotten really bad. I'm not getting out of bed. I need to get some more help. That will get her started. Then, when you feel ready, Mom, my bipolar is back. You needn't go into the horrible details until you get some help and Mom has adjusted to the fact that you are in trouble again. It doesn't have to hit her all at once, in fact, it would overwhelm her if you did. But you need the backing of your Mom, and telling her is a must.

Keep posting. We're here to back you up.