I slept with a guy I didn't know to well it was only a couple of times and we used a condom everytime, but I still ended up pregnant. I did some research and the syptoms that people could have after being infected I didn't have, and eveywhere I looked it talked about getting HIV by unprotected sex-nothing about if a condom was used. So what are the numbers of people who use a condom and still get infected??? I wouldn't even be worrying about this had I not got pregnant (which I terminated, and my doctor didn't seem worried that I needed to be tested). Help!!!!!!!!!
The only way that you could have gotten pregnant is if sperm in your partner's semen had access to your body. This means that, if a condom was used every time, that there must have been some sort of break or tear in the condom. Sperm cannot pass through an intact latex condom.
If the condom is latex, does not break, tear, or slip off, and it is used correctly during the entire sex act, it should be 99.9% effective in preventing HIV transmission and many STDs. In a 1987-91 study of mixed-HIV-status couples, all 123 couples who used condoms every time for four years prevented transmission of HIV. In 122 couples who did not use condoms every time, 12 partners became infected. Another study showed that using condoms every time prevented HIV transmission for all but two of 171 women who had male partners with HIV. However eight out of 10 women whose partners didn't use condoms every time became infected.
Condom breakage during intercourse is estimated to occur anywhere from 1-8% of the time. One study of couples using condoms over a period of time showed that 62% of them experienced no condom failure (meaning breakage or slippage), 29% had one to three failures, and 9% had four or more failures. A small percentage of couples accounted for the higher number of failures. Most studies show that higher rates of condom failure happen among a small percent of the general population (some have estimated as low as 4-6%). This may point to traits in the condom users, like technical skill, experience using condoms, prior episodes of breakage, condom fit, and amount of lubrication. Commercial sex workers have demonstrated the lowest condom breakage or slippage rates. There is some speculation that condoms fail more frequently during anal sex, but why and how have not been demonstrated yet. Condom failure is more often attributed to user behavior and not flaws in the condom itself.
It's difficult to explain what happened in your circumstance, but it is not unheard of. If you are concerned about your partner's HIV status, get an antibody test three or more months after your last exposure.