Crying..but no one knows

A couple of months ago I diagnose myself with signs of depression. During this time I wouldn't eat anything for days. I slept for most part of the day. I never went to class for about 3 months causing me to fail all of those classes and even though I failed those classes I still didn't care. I started crying myself to sleep but no one would know not my room mate and not even my best friends. At times I would go into the shower and I would start to cry, sooo much that I felt weakened and all I could do was sit down on the shower floor and cry. I know the source of my depression and I have tried to wash them out of my mind but after that period of denial, thinking that I could, I realized that it was still there. Till this day thinking about these factors in my life still makes me cry and still no one knows.