After my divorce I had a one night stand with a friend whom I've know for over 20 years. Stupid as I am, the event was unprotected. About two weeks later she went to the ER because she was not feeling well following a sexual encounter with her regular partner a few days prior. At that time they told her they had a reasonable suspicion that she may have been infected with chlamydia and they treated her for it. I don't know if they tested her for it, I don't know how a doctor could have a reasonable suspicion about something like that, but since she told me about this I have been paranoid and while I haven't had any symptoms I have been hyper vigilant and hyper sensitive about my nether regions. My question is, how likely am I to have contracted chlamydia from one exposure without protection? I plan on getting to the doctor soon to get tested but I have no insurance and need to have the funds for a full battery of tests before I go in. Please help.