Chance of risk?

I recently had 4-6 seconds of unprotected vaginal sex with 19 yr old girl before putting on a condom for the duration of the encounter...she isn't drug user and claims to only have had 3 previous partners who all used protection and says I'm at no risk but I dont know her that well and can't help but be worried...should I be concerned?I can't stop thinking about it...Thanks.

[Teak]

Didn't we just have this question under a different nick this week?

[slicewk]

?? I wouldn't know just found this forum..like I said any valuable input appreciated guys thanks.

[Teak]

Latex condoms, when used consistently and correctly, are highly effective in
preventing transmission of HIV, the virus that causes AIDS. In addition, correct
and consistent use of latex condoms can reduce the risk of other sexually
transmitted diseases (STDs), including discharge and genital ulcer diseases.
While the effect of condoms in preventing human papilloma virus (HPV) infection
is unknown, condom use has been associated with a lower rate of cervical
cancer, an HPV-associated disease. Laboratory studies have demonstrated that latex condoms provide an essentially impermeable barrier to particles the size of STD pathogens.

Which of the above did you not do?

[slicewk]

Thanksfor response..it's really the 4-6 seconds of unprotected sex before putting on the condom that I'm worried about.