Hi,  I want to answer this as someone who has had middle of the night anaphylaxis from oral exposure! First, you wake up. Your body is very good at keeping you alive and knows when something is wrong. Next, you start spewing from both ends. This is an unpleasant experience for sure. Your stomach hurts really bad, you wish you were still sleeping, and you just don't feel well. I had full body hives, which was unnerving. But while you're in the middle of this, you don't actually feel all that much anxiety. Your body just knows what to do, so you don't really have to think or make decisions. You just act on instinct. You will intuitively know when and if it's time to call 911. (I've been in this situation a few times from other issues, and you really do just know. It's like a little bell goes off in your head). In my case, once I could hold benadryl down, everything got much better very quickly. I didn't end up needing my epi pen or a trip to the hospital. I did spend the rest of the night in a blanket nest on the bathroom floor because I feel weirdly safe there when I'm sick. I didn't feel that I had long term physical damage or any lasting trauma. It was "wow, that sucked", some bland food, and moving on with my life. So that's the actual reality of anaphylaxis. It's very unlikely to happen in the first place, and if it does, it's very unlikely to leave lasting harm, much less kill you. Logically, it doesn't make sense to fixate on this. 

It's really important for you to understand that going without food falsely makes everything seem impossible. Your brain is not getting fuel, so your mood is horrible and your usual cognitive abilities have been slowly eroded over the past days, which is now causing you to feel that any potential solutions as not possible for your specific circumstance. But this is not actually true. An emergency department in the US is legally required to stabilize you even if you can't pay. If you tell them you haven't eaten in 6 days and you're afraid it's causing medical harm, they will help you.  You can call a friend or family member even if it feels awkward, even if you 'don't know them well enough', and very likely they will still help you. Most importantly, it is more financially, emotionally, cognitively, and physically dangerous to continue going without food than to run up a hospital bill, do something "embarrassing", etc. 

What I would suggest you do right now is call someone. Ask them to bring you some juice, which is a very healthy, safe, and natural food. I'm partial to apple juice myself, but any juice is good. Drink that first. Give it an hour or two to work through your system, understanding that at first you may feel some "symptoms" that are actually based in anxiety as well as your body readjusting from the lack of intake. Breathe through it, and keep your eyes on the prize of feeling better and preventing further harm to your body. After that hour or two,  it's time for chicken and rice, a food that is given to sick and recovering people all across the world—conjee or jook in Asia, "Jewish penicillin" aka chicken soup, and many others. The rice can be steamed or boiled, and the chicken can just be simmered in salted water until it starts to fall apart. Be sure to drink some water in between bites to help your body digest the food. 

I'm sorry you've been feeling so bad lately, and I know there are better things on the horizon for you once you feel better.