Yellow Discoloration Of Lips HELP! I Have Certain STD Symptoms, But I Have Already Been Tested?

HELP! I have certain STD symptoms, but I have already been tested? - yellow discoloration of lips

Hello, I'm 16 years old. I just test all sexually transmitted diseases, as a rumor that someone had sex with, may be carriers of chlamydia. All my results were negative, but that exposure to this person, I developed relentlessly dark circles completely around the eyes (almost as if they had fallen a bit), pustules and marbling on the back of the neck, changing the color of the cervix, a excessive discharge (both unscented yellow, white or transparent), and pallor. Approximately three weeks after exposure, I was sick for three days, and developed a lymph node. My chapped lips also experience very occasional abdominal pain have also lost weight from vomiting and sometimes with a burp. In addition, I developed a vaginal rash with small bumps, white and light raorganized. Once again, have been tested and went well, and often before the show. Should I be concerned, and what to avoid sexually transmitted diseases? My doctor says I am nonetheless.