Expert: Terry B - 7/29/2009

Question
i had unprotected sex but he did not cum. i do not know his status. how likely is it from precum that i contracted hiv if he is positive?

also i had unprotected sex with him july 29. how long until i can get tested to make sure i am negative?

Answer
Dear Catie:

Peace.  July 29 is today to those of us in the US.  There is a chance you could find a doctor or clinic that might offer a test for post-exposure prophylaxis - but you should consult with a physician immediately if you want that option. Only read onward if you are not going to take that option.  More information on "post-exposure prophylaxis" will be provided to you by your physician.

On the first question, pre-ejaculate (pre-cum) is pretty much comprised of the same fluid as semen, so you would weigh the amount of fluid, the number of times exposed, duration of the exposure... your risk from the first question is present but seems low, especially since you do not know his HIV status.  

What I would recommend at this point is that you get some latex condoms and protect yourself and your loved ones from potentially infectious fluids - blood, semen, vaginal secretions - and if you are in contact with this person on a regular basis, discuss your concerns.   You could both be tested and this might help you both address the issue.  There are tests (ranging in cost) that can look for HIV more quickly than standard antibody testing, but there is some risk (~11%) that it will give you a false positive, meaning that you might worry needlessly until results are confirmed.

Most importantly, meeting with a counselor may provide you with opportunity to discuss risk and how to reduce it.  Two potential exposures to someone whose HIV status is unknown is hard to assess for risk without more information.  If you opt for standard antibody testing, six weeks between your last exposure should give you some indication of your HIV status.

I hope this is helpful, sorry I do not have a clear-cut answer for you.

Best to you and yours,

Terry