I'm sorry to hear that this happened to you. Brexit also put a lot of psychological pressure on my wife. She's from a Baltic country, but during Brexit, she'd constantly be asked if she was Polish for no reason at all.
-"Hi, nice to meet you"
-"Hi, are you Polish?"
Nothing against Polish people of course, but it made her start to gradually lose it. Each new instance would bring tears for days
Luckily, it seems Brexit is not on everyone's mind now. Good luck to you, try not to stress out (it's not your fault)