The Mrs talking here: If theres any kind of excessive or abnormal discharge, such as thick or yellow, or if the itch becomes internal, or close to the opening, you should get it looked at.

Otherwise if it stays in the general area, and doesn't get to bad... you can try a store-bought vaginal cream. And one big thing- avoid scratching or rubbing. If you get worried... get it looked at anyway.

Yeah do as roselover said. If it continues for over a week get it checked out. Did you use protection? If so then you may be allergic to condoms??? If not then you may have got soemtihng.... i wold think it is a yest infection though. If he came in you probly you are allergic to his cumm.... i donno i would search online for all the possiblitlies i gave you and see if they fit into what you are feeling
RESEARCH ABOUT
* Yeast infections
* Allergic to condoms
* Being allergic to your mate's cum
* and Sexually transmitted diseases

Here, I have the perfect site where you can look up most of that information. (i've never even heard of being allergic to ones cum)

Here ya go

I should make note, its not the prettiest place in the world... but then again, nothing about STD's are pretty.