17 days ago I made a horrible mistake and had a 1 night tryst with a random bar hookup. I had unprotected vaginal and oral sex with her. 3 days later I woke up and had an unexplained severly swollen knee. (little to nopain front of knee cap) Dr identified it as possible prepatellar bursitis. Could this be a swollen lymph node instead after 3 days since exposure??? Since than I have had minor sore throat, and splottchy rashes on stomach and chest that last for 30-45 min and go away. I have also had what maybe oral thrush the last few days. I did start taking some doxycycline mono for 10 days that i had laying around from and old acne perscripton that was not expired. Could this be tha cause of the rashes & thrush. I plan on getting tested for STD's tomorrow. Do you recommend also having an HIV andtibody test at this time or wait until 6 weeks.
Welcome to the forum. The bottom line is that you should be having no worries about HIV of other STDs. Here is why:
First, in the US and other industrialized countries, the chance any particular woman has HIV -- including those willing to be picked up in bars -- is very low, probably under 1 chance in 1,000. Second, even if she had HIV, the chance of transmission for any single episode of unprotected vainal sex is around 1 in 2,000. (So on those two issues alone, the chance you caught HIV would be around 1 in 2 million, i.e. virtually zero.) Third, HIV symptoms cannot start in less than 7 days and it's usually 10-20 days. Fourth, your symptoms don't sound like acute HIV infection or those of any other STD. Fifth, no doctor is going to confuse a prepatellar bursitis with an enlarged lymph node. The two conditions aren't similar in any way.
Thrush is not a diagnosis a lay person can make without professional advice. Most white coated tongues, for example, are not thrush. I can't judge whether or not the changes in your mouth might be related to doxycycline, but it sounds like a possibility. Also, I can't judge the splotchy rash either. But neither of these problems is likely to be due to a new HIV infection or STD.
From a medical or risk assessment perspective, you don't need HIV testing at all. But assuming you remain nervous despite my reassurance, have an HIV test. If you don't mind the wait, a single test at 6-8 weeks is fine. If you can't wait, have an initial test at 4 weeks (highly reassuring) and a follow-up test at 8 weeks or so.
In the meantime, I see no serious concerns here about either HIV or other STDs. Follow through with your plan for STD testing, but don't lose a lot of sleep over it. It is unlikely you caught any infection of any kind from your bar pick-up.
Regards-- HHH, MD
If you remain concerned about your symptoms, return to your doctor for professional re-evaluation.
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