STI/STD/WHAT IS THIS?

So I posted a couple days ago about my sister, her symptoms are becoming more intense and she has had several doctors visits and everyone keeps saying she is fine! She has her gyno appt scheduled on Wednesday but she doesn’t feel she can wait that much longer. She went to the doctor again today they ran a couple tests for STIs and STDs, but she won’t have those results back for a couple days. She’s currently experiencing burning in the back of her throat, with pimples, and burning inside of her vagina. She did not visibly see anything down there. The doctor also did notice she had a fast pulse, but they checked her heart and it was fine. I personally have never experienced anything like this and I just don’t know what it could be.