[rambutarn]

If the FL is not infected with anything, chances is zero. If FL is infected with something, chances you get infected are not very high as you only visited once, but it is still probable (probability can vary significantly based on encounter eg. whether FL has open sores or ulcers, did you pee right after the deed, etc). To put your mind at ease, you can try asking the FL if she has done any recent STD test and send you, but not all of them do or are willing to send. Else, safest way is note the date of encounter, wait till after the incubation period and seek a doctor's advise on what tests is best for you. In the mean time, try not to panic or think too much about it as it can be quite nerve wrecking esp on your mental health. Maybe monitor for any irregular discharge, sores or growths also.