What Causes Itching In My Clitoris?

my clit started itching 2 days ago..and i scratched it but it would just itch more and i tried not to scratch anymore.i had sex today and he wore a condom that had no lubrication then my clit and one labia swelled but the itching is what worries me..i dont have any weird discharge or smell but i would like to know why or whats causing it..becuase it just happened out of nowhere.ohh and i am sick.ive had a sore throat for about two weeks,my tonsils are really red..hard to swallow can that have anything to do with it?