Zach had a lot of similar problems from low carb which he cured by following the tips above so I'm sure you can take his advice.
I just wanted to say I'm really sorry that you havent been well and I feel your pain about the appearance-induced agoraphobia. You may not look your best right now, but that it's not going to last and I'm sure you're still beautiful. Anyway, strangers on the street won't know the difference
Make sure you tell your close ones what's going on with you so they can give you support.
PS. Low carb wasn't optimal for me either.
“I'm glad mushrooms are against the law, because I took them one time, and you know what happened to me? I laid in a field of green grass for four hours going, "My God! I love everything." Yeah, now if that isn't a hazard to our country..."
― Bill Hicks
"Sometimes eating the wrong food with the right attitude is a better choice than eating the right food with the wrong attitude... That’s how powerful the mind and the heart can be in the healing process."
- Chris Kresser