i can't do anything alone

So this is a weird post. I am 19, I have a 1 year old and another daughter who passed away 7 months ago. I am married and my entire life I have kept to myself because I was mentally and physically abused by my mother. Anyways, I never had friends in school, never joined any clubs. I loved to dance but could never join because I was the "loner" fast forward, I'm now graduated. I don't work. I don't have to because I take care of the house and kids and my husband makes more than enough but I also don't work because I'm scared. I hide myself inside all day. Hell I don't even want to go outside to get the mail in case the neighbors see me. I keep my head down in public to avoid any conversation. I've completely isolated myself and I don't know why. It's almost like.. a fear? I'm in college and I see myself in the future doing something amazing, saving people, the girl that dresses up and is confident but then I think about actually doing it and I shut down again. I have gone as far as to considering quitting college because what's the point if when the times comes, I won't beable to bring myself to go to an interview and face someone? 
I want to say it's anxiety but I'm not sure. A lot of it comes from my hate for my looks. I've had braces since I was 15. I can't ever make it to my appointments and even if I did, I'd still have a year to go before I would look good. That's a big thing. But other thank that I just don't know.. 
Any ideas? I don't even drive because I can't stand the thought of taking the driving test and sitting in a car with a stranger watching me..
The worst part is, I won't even call anyone besides my dad and my husband. If my husband asks me to call the electric company, I lie and say they don't pick up. I don't make my own doctors appointments, I don't even make my daughters appointments.. please help me