I'm a 27 year old male who just had anal penetration for the first time a week ago today. The person I chose to have intercourse with was someone I knew for a while and after asking him to bring the condoms and lube we proceeded to my bedroom. The lights were off at the time and insertion took place without any problem. After about a minute into it I thought to myself whether he had put a condom on and noticed by checking with my hand that he hadn't. I immediately jumped up distraught asking him to put on a condom. He complied and we had intercourse for about another 45 minutes at which time while giving me oral he slipped the condom off. I noticed this time after about 30 seconds of unprotected intercourse and told him to put on a condom. He nor I climaxed as I had become frustrated at his 2nd attempt to have unprotected sex. I have been terrified since the incident. He says he's 100% clean and negative, but such risky behavior makes my mind wonder if this is true. My plan is to ask him to be tested with me next week. If he does not want to get tested with me and he is positive what are the chances that I have become infected with HIV and what options do I have for testing as such an early stage following possible exposure? Also, after how many weeks of repeated testing could I consider the results I receive conclusive?

It is a shame that this partner was not trustworthy and your concerns are justified. It is impossible to know if he ejaculated to any extent and useless to ask him.

Getting him tested for HIV, syphilis, gonorrhea and chlamydia is a good idea. If he refuses I recommend you get the following testing performed:

- Gonorrhea and chlamydia screening now (swabs of your anus and throat plus test of urine)

- Blood syphilis test and an HIV test now and again in 3-4 weeks. Repeat HIV testing at 12 weeks.

If at any time you develop new symptoms such as a flu like illness, rash or ulcer, you should seek out medical attention.

It is hard to say what the chances of infection are for a single event. Much depends on the amount of virus the infected person has in their body fluid, presence of other sexually transmitted diseases and your own susceptibility to infection. Any figure would likely be widely off base and a range of little use.

DW