Yeast infection past 2 weeks

It has been awful. Started as intense itching/burning/redness. Took over the counter monatstat and usually that does the trick for me...not this time. It got so bad I developed these weird looking bumps (looks like swollen glands or something) that freaked me the fuck out. Went to the doctor to test for yeast..came back negative. He told me that's not uncommon. He gave me some topical antifungal cream and a pill that is supposed to rid of the infection. I've been using the cream since yesterday and just took the pill this morning. I have had no relief from the cream whatsoever. I got a mirror to inspect myself to see if it looks any better and just touching part of myself down there made it turn bright red almost instantly and then followed burning. I have NEVER had an infection like this before and that has lasted this long. I had found in the past that using therapeutic grade tea tree oil feels really nice so I just put some down there and haven't felt this good in 2 weeks lol the cooling sensation is top notch! Has anyone had anything like this? I'm over it. I'm convinced it was created by a number of things; stress, tight pants, taking a bath in an uncleaned bathtub with bath salts with fragrance. Advice or words of hope would be great!