How Can Vaginal Lips Itching With UTI Be Treated?

My vaginal openieng itches really bad. I had sex for the first time on Dec 23, and the condom broke so we stopped. We had sex the next day (Dec 24) and the condom broke again but we did not stop. I went to the pharmacy 30 min later and took plan b. (next choice) On Dec 25 I found out that I had a Uninary Tract Infection so I drank cranberry juice all day Sunday and Monday. On Dec 28 I experienced really bad itching in my vaginal opening. I ended up having sex with my boyfriend again that night and the itching stopped. On Dec 29 I had the worst itching ever. Ever since the 29 of Dec I have been itchin everyday, and today is the 3rd of Jan. Please Help Me.