There is nothing you can do about it now
From Create Your Own Story
After about a week Brandon came back and apologized, he understands where you were coming from now and you guys get back together. You think about telling him what happened with Zach, but you guys were on break and it will only make him mad so you decide not to. Things are back to normal and going great with Brandon, however lately you notice there is an increased amount of discharge in your underwear and it burns when you pee. Unsure about what this is later while talking to Marley you tell her about it. That is when she brings up you having sex with Zach the night of the party. She asks if you used a condom but you honestly don’t even know since you were so drunk. Marley suggests you should probably go and get tested for an STI.
In South Chicago there are several clinics where you can go get tested: https://www.google.com/maps/ms?msid=213841452134470542986.0004c580cd03312d8ea15&msa=0
Nationwide you can look up a clinic here: http://www.itsyoursexlife.com/gyt/std-and-testing-faqs/where-do-i-go-to-get-tested/
