This guy figured it out. Reading all your stories sound so similar to mine. Started up about a month after unprotected sex as well but all tests negative multiple times. I came to this guys same conclusion after hours on hours of research online (Doctors will only give you antibiotics which make things 10x worse, watch out). Had heaps of skin breakouts nearly two months in, stick to it, don't cave. lot of yeast breakout stuff like jock itch etc out of no where. Then all symptoms started going away. It was bliss for like two weeks. Then I started slamming Latte's and Banana Breads again and it was all over. About to start the whole diet again. Goodluck. Do research into Candida. Check out Eric Bakker he seems to have figured it out.