Hello and hope you are doing well.
A pinguecula is a common growth, which develops at the junction of the cornea with the conjunctiva, in response to eye irritation or sunlight exposure. It could have developed as a consequence to your allergic reactions. This usually does not need any therapy, unless it obstructs vision or for cosmetic reasons.
Hope this helped and do keep us posted.
I once had what looked like a bubble on the white of my eye. Extremely annoying and I could move it. It was the result of an allergic reaction to a dog. I'm allergic to animals with fur and my guess is I got some dander in my eye. It took 2-3 days to go away.