Nuts & Shellfish

Hello, I’m currently 13 and in 8th grade. Unfortunately, I have allergies to shellfish and nuts, while they aren’t severe, they do cause me to get rashes and get itchy. I’ve had this allergy since I was born or for as long as I can remember. My allergies have caused me to be unable to eat a large amount of food, which has caused some issues. An example of this would be when I attended my cousin's wedding, while there were some dishes that didn’t contain any shellfish nor nuts, there were only a few amounts. Most of the dishes contained seafood, which I of course couldn’t eat. Another thing I would like to add is that some people would think that I was just being picky and faking my allergies, which of course is kind of annoying. While my allergies aren’t that severe I rather not be itchy and have rashes just to eat something like shellfish. There have also been some instances that I have accidentally eaten foods containing my allergies since nuts and shellfish are very common among dishes. While my allergies aren’t life threatening, after a couple of hours I felt really itchy which was really uncomfortable. But other than that I don’t mind having allergies since there are a lot of other foods that I’m safe to eat. It does suck sometimes when I can’t eat something that looks good though.