Around 8 or 9 months ago, I had a guy put his penis in me unprotected for like 10 seconds. He literally just stuck it in and out. I had never had unprotected sex before and the guy just wanted me to experience what it felt like to have a penis inside me without a condom. There was no thrusting action at all. Just in and out. The actual sex we had was protected. However, is there still a chance I could have gotten infected with chlamydia?