I Am Having And Allergic Reaction To Something In My

I am having and allergic reaction to something in my house. It looks like something has bitten me around my eye and it gets swollen and itchy. I have also had an experience where its made my throat ithcy and it haooend on both my eyes. That was after i put on my coat that had been put up for the summer in a closet. The first time it hapoened i was just sitting on my couch and ,y eye started itching. It felt as if i was bitten and like there was something under my eyelid after i rubbed it. The doctor in the er saidnthere wasnt anything there. It was very sore for a couple days. Taking an allergy med and washing my face helps within 10 to 15 minutes. It's been happening since August and not very often. And while I do have a dusty house, when I'm cleaning it doesn't always happen so I'm uncertain if it's a dust mite allergy (yes I know they don't bite and it's their feces you can be allergic to) I'm just at a loss as to what it could be because I never see anything. Do you have any other explanation besides dust mites? I'm just not convinced that's what it is because I feel a bite and then within a minute or two it's itchy and I'm miserable