When I urinate I keep having a sensation as if I still want to urinate and my vagina hole itches

Hi am 18 and I lost my virginity on the 15th to my boyfriend. We had sex with protection. But on the 22nd we drank alcohol and we didn't use protection. When I urinate I keep having a sensation as if I still want to urinate and my vagina hole itches . am freaking out because it's uncomfortable and I just lost my virginity