Am I suddenly becoming allergic to multiple things?

I can’t sleep and decided that I would make a face mask out of some rhassoul clay that I got specifically for that purpose. I did my research, prepared it how I was supposed to, left it on for the amount of time that I was supposed to, but after I took it off my face was lobster red. It’s been about 20 minutes now and my face still isn’t back to normal. Could this be a clay allergy, or might I just have extremely sensitive skin?

If it helps, I have experienced some skin reactions/allergies fairly recently – both of which were very unexpected since I’ve never had allergies or reactions (to anything) in the past.

One of them landed me in the hospital because I had hives covering my entire body, head to toe. They lasted about 2½ days and it was never determined what caused them and I haven’t had them since. The other reaction occurred after I had to use a butterfly bandage to hold stitches together. When I removed the bandage, my skin literally bubbled up like a dome where the bandage had been.

I was also informed at my last ophthalmology appointment that I have some kind of allergy because of the “bumps” that she saw in my eyes. She said it’s impossible to tell what kind of allergy, but that I absolutely have one since that’s the only time the “bumps” (not visible to the naked eye) show up in people.

Honestly, I’m a little freaked out since all of this is new and seems to be happening at once. Can suddenly becoming allergic to multiple things be a normal part of aging?