Anxious about dentist, allergies to composite fillings?

So, it’s 3:39AM, and I can’t sleep because I’m too concerned about my dental appointment tomorrow (2 baby teeth pulled, and 4 composite fillings).

I have a history of severe allergies (latex, aspirin, many medications, food allergies), and I’m really concerned that I’m going to get sick from the dental composite material or the resins they use to bond them. I know it’s rare, but I’ve gotten a lot of rare shit before, and I just am at a place in my life where I’m happy and healthy and I want to stay that way.

Have you ever met anyone allergic to them?