TMI/ Drug test complication

So I had a job interview today. They asked for a drug test which I consented to. (Sidenote Im a chunkier girl so my lady parts are a little squishy and bigger than the average woman) About an hour after I left, my labia majora started to burn so badly. My first thought was okay maybe they sprayed/wiped down the toilet seat with a harsh disinfectant before each test (I hope so! 🤮). Anywho, I got home still burning pretty bad. Took a shower and put some monistat cream I had left over from when I was pregnant, it seemed to help but even the slightest movement makes it irritated and burn worse. I haven’t been sexually active since I had my son back in november so I know its not an std/sti. No discharge or foul odor! It just burns so bad! I have no idea what to do. My OB appointment isn’t until May 14th and they cant see me sooner so I’m helpless. 😭