Do I have an eating disorder? Or is it just some other problem?

I honestly can't tell you the last time I've actually wanted and enjoyed a full meal. I've always skipped breakfast and i actually started to get physically sick if i ate in the morning. For about a year now, I've been skipping meals (lunch and/or dinner). My mother would force me to eat dinner at least, but after I was finished, I would immediately feel disgusted with myself and want to throw it all back up. I could never actually bring myself to, though. Typically, there will be a week every couple months where I just eat and I'll immediately feel guilty and sick after and I will skip every meal for at least a day. In January 2017, I skipped so many meals, I was physically sick for a week. I'm in college now and my mom's not here to regulate my eating, so I've had about 2-3 granola bars a day with a little cup of diced peaches or apple sauce. some days, I force myself to go to the dining hall and get myself something small to eat around 10 pm, but that's pretty much it. On the weekends, I hole myself up in my dorm and pretty much eat nothing. I prefer having an empty stomach and would rather drink an entire bottle of water than eat a real meal.

On a side note, I do have depression and general/social anxiety. I don't know how much I weigh because I don't like to weigh myself anymore. Seeing the number always made me feel sick and disgusted with myself.