I am so sorry for what you're going through, it sounds awful. =( (((((HUGS))))
I'm glad that you have sought medical attention - what your going through really makes it sound like something is very wrong. Did they do a leak test?
If you're still having problems is it possible for them to switch your antibiotic to liquid form? Many antibiotics are available in liquids It's not going to help if you can't even take the medicine, and I know some antibiotics can be like horse pills, very difficult to take. If you still cannot get them down, you should definitely let the doctors know that you are not getting them down, you may have to be readmitted to be given the medications IV. I know that sounds awful, but it will be worth it when your symptoms can finally clear up.
I wish I could help with the depression. I know right now is a very stressful time, and I can't even imagine how hard it is, but you are strong and worth getting through this.
Have you ever considered seeing a therapist? Do you have any family living with you or that are close by that might be able to spend a few days with you right now? You need some support right now to help get through this tough time. There is nothing wrong with needing someone to talk to.
Are you able to sip on meal replacement shakes? I know that boost has quite a bit of sugar, but you might want to ask your NUT if it would be okay to drink for a few days while you recuperate. It's thin and maybe will be easier to get down than protein shakes.
I'm really sorry that you're going through this, and if you need to vent or need a shoulder to lean on, we're here for you.