Food Allergies!

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I had my first allergic reaction in my life today and it totally freaked me out! I think it's an allergic reaction to beats? My face swelled up, and my throat swelled up and I couldn't breathe very well or swallow without pain. My lips were huge! They're still pretty big ! (See pictures)
Anyone else have to deal with food allergies? Is this what it is? Commiserate with me?