I feel you.
I played in a LGS as a fat kid in 8th, 9th grade forever ago. Blended in fine and everyone was nice to me.
I quit playing for the rest of high school because I was busy chasing skirts and hanging out. I slimmed down and attractived up in the meantime.
Post high school I went to go draft with a buddy on a whim at another shop and I was treated like a leper. It feels like such a funny thing to bitch about because oh no poor baby but I still had the same enthusiasm for the game and skill level while the only thing that changed was my appearance. No one was outright rude to me but I just got a lot of half sighs and one word answers when trying to start a conversation...even if they were joyfully chatting amongst themselves.
I've only played kitchen table since. Nerds can be mean girls, too.