Rashes are uncomfortable and I'm glad yours cleared up quickly. That was smart and the right thing to do to go to your doctor. With STD worries, protected sex isn't a risk nor kissing but oral sex can be a low risk. Normally you don't have to test unless you have actual symptoms. I'll link a post from Dr. H Hunter Hansfeld, an expert doctor that has a history with this site. Here are quotes from his answer. " I'll start with the general reassurance that oral sex is safe sex. Not totally free of STD risk, but much safer than vaginal or anal intercourse. The odds are strong you didn't catch any STD at all.
Then he says the risks are: 1) The most common STD after oral sex is nongonococcal urethritis (NGU), often due to normal oral bacteria. When not due to chlamydia, which is not transmitted by oral sex, NGU is never serious and usually causes no problem in men's sex partners, so it's not a serious worry. Other possibilities are gonorrhea, herpes due to HSV-1, and syphilis. All these are rare outcomes of oral sex.
2) In theory, the chance of syphilis or herpes might be eleveted by local skin trauma, but by too little to matter. (now you are saying your penis was cut by her teeth. but she'd have had to have oral syphilis herself to transmit and hsv to begin with in order to put you at risk for this). Hansfield goes on to say it is so unlikely you caught herpes from this. He described it as one in a million.
Dr. HHH says too 3) Whether acquired orally or by vaginal/anal sex, the symptoms are the same: discharge of abnormal pus or mucus from the penis, sometimes accompanied by painful urination (gonorrhea, NGU); or penile sores (herpes, syphilis). Gonorrhea usually causes symptoms within 5 days, NGU 7-10 days, herpes 2-5 days, syphilis up to 3 weeks. If you decide to be tested even without symptoms, a gonorrhea test can be done reliably any time now -- 2 days after exposure is plenty. A syphilis blood test can be done at 6 weeks, and HIV testing could be done at the same time. I recommend against testing for HSV unless there are symptoms that suggest herpes.
Here is the link to copy and paste into your browser. I hope it helps. https://
www.medhelp.org/posts/STDs/STD-Risk-Receiving-Unprotected-Oral-Sex/show/1200596