Concerned about transmission risk

Greetings, I am concerned about a recent one might stand I had with a woman of unknown status.  I am male and had brief unprotected vaginal sex with a woman.  It was three times that night for about four minute intervals. The next day I noticed very minimal amount of chafing behind the tip of my penis. I did question her about her status. And she said she was negative for HIV and other stds. But I'm still concerned.  If she did have HIV or something else... Would that minimal amount of chafing greatly increase my transmission risk? I plan on getting tested in a couple weeks. But just wanted an idea of how great my risk was before I went. Thank you for your time.

[Ice_Man]

The risk is very minimal but it is wisable to get tested 12 weeks after the exposure.

[LIZZIE LOU]

you dont need "chafing" to contract hiv ! ! !

test 6-8 weeks post exposure for a good indication of your status, but follow up at 3 months for a conclusive result