Lost, I will not say that I know just how you feel. No one knows exactly how situations effect others. I can say I have some similar situations in my life.
I have no family, they have all passed away. The last one when I was 36 yrs. old. My depression became so bad after this that I could not contribute to my relationship so that ended. I had not contributed much to my friendships either so they were people who just were occasionally in the background, but not who I could talk to. In the 4 years after this I gained 60 lbs.
I have been working on getting better but it is frustrating. I also have been on many meds that have not helped. I believe it has now been 6.
Any how, some ideas I had, have you thought about volunteering somewhere. It gets you out around people and it is something that will help you to feel good about yourself. When I first tried to volunteer I was too sick (depressed) I could not make myself go. I know you have anxiety, but there are some voluntary jobs that do not require much interaction. You could work yourself up. I have anxiety also.
My psych. told me that when you are depressed due to an event ie. family dying or in your case possibly due to abuse as achild and then family rejection you need to also deal with those issues along with meds. or meds alone will not work. Just like putting a band-aid on a gushing wound. He talked me into going to see a therapist. Are you counseling with someone or is that a possibility for you. At the least it forces you to get cleaned up, dressed and out somewhere.
The eating situation.~~~ When I felt so depressed I could not eat I would try to take advantage of that and at least eat a few things that are "good" for me. Some veg., small piece of meat or fruit. Remember when you go long periods with out eating your body thinks it is starving and will be training itself to hold onto every thing you put in it. Thus, counter productive to loosing weight.
Please hang in there Lost, look forward to hearing from you again.
cJo