Ok so I got a new pair of underwear and wore them to work and the next day when I woke up, the left side of my vagina was swollen, could the underwear just rubbed against my vagina the wrong way and made it swollen and irritated?

Not sure why this is in child's health and you refer to going to work ?

But yes or a reaction to dye or the material it was made from. Did you wash them before use

It's child/teen health if you didn't realize, sone teens do have to get a job.

Anyway, no I did not wash them before I wore them.