Concerned Down There

So my fwb, of about a month, and I had sex on Sunday with a condom and everthing went great and I finished him off with a bj.  He did use a different brand of condom than what he usually uses.  However, the next day I woke up feeling itchy down there and I am still itchy five days later.  At first I thought the itchiness was due to a lack of foreplay and I may not have been wet enough. And I had normal color discharge except for yesterday and now continuing on to today where it is a light greenish color.  I do have a home std kit being mailed to me and I'm supposed to start my period in a couple of days. 
Has anything like this happened to you ladies before? Any recommendations to help deal with the itchiness???