I had sexual intercourse 48 hours ago with a female I don't know very well at all.

Before intercourse, I opened up a very small pimple (whitehead) on my penis during grinding (with clothes on) and not sure if this dried or not before intercourse started. This lasted 5-10 minutes fully clothed, and then I put on a condom and touched my penis with vaginal fluid on (1 minute gap to do this). The condom was on safe and secure and did not come off during intercourse and no leaks. Would there be risk of infection of std's in the condom, either into the penis or into the open spot on the penis? I touched the penis on the other side away from the spot, not sure if that makes a difference. 

I then took the condom off and washed hands, and  the spot looked closed and clean. I also noticed dried blood on my leg, from the female I am pretty sure, and after 5 minutes put on my boxers with my penis against my testicles that may have still had some vaginal fluid on. 

My 1 question is, would I be at risk of any stds from this, and if so, what measures would you recommend?

Please let me know if you have any questions about any of the details, to be at peace of mind from this would be fantastic!

Many thanks

Toby

Are you at any risk for any STD? Sure -- but certainly the risk is low. You used a condom, and genital grinding is little or no risk, and for sure no risk with clothes on. The pimple on your penis didn't elevate your risk, either before or during actual vaginal sex. Skin contact with vaginal fluid, or with menstrual blood, carries no significant risk.

In general, the risk of any STD (including HIV) from any single exposure is low enough that testing isn't necessary. However, testing has reassurance value even when the risk is low. If you're gonig to lose sleep worrying about this, wait until 4-5 days after the event and have a urine test for gonorrhea and chlamydia; and at 6 weeks have a blood test for syphilis and HIV. You can count on negative results.

I hope these comments are helpful. Let me know if anything isn't clear.

HHH, MD

Thank you for your answer, this is all very reassuring and greatly appreciated.

Out of curiosity, why wouldn't an open spot increase risk of transmission of an STD?

Thanks