Relax! At first it can be stressful, difficult, even seem like there's absolutely NOTHING your kid can eat; I've been there. I've started crying and felt like a failure as a mother because it seemed like everything I gave my child gave her hives. But it gets better, I promise! It isn't the end of the world, it's not as scary as it seems (you just need resources, information, and allergy mama buddies to talk to!), and there's plenty your child can eat.
One thing I highly recommend is to write a list of what your child can eat. It's good to have a list of what your child needs to avoid, have it ready for other caregivers, and take it with grocery shopping... but it's also kind of depressing to stare at list after list of what your kid cannot have. It was such a relief the day I sat down and wrote a list of what my daughter could eat; it was after I broke down and said I had no idea what to feed her - everything was giving her hives. I calmed down, pulled up my laptop and started typing foods she hasn't reacted to. I got 3 whole pages! I also learned to start searching vegan recipes because those wouldn't have the beef, chicken, dairy, or eggs that she's allergic to and I could go from there easier than starting from scratch and working out all of her allergies individually.
Buggy's Current Allergies: