Why does it itch down there?

For about a week now my part down south has been itchy and I don't know what it's from. I had sex with my boyfriend about week before it started. he used a condom but could I have a STD or something else? I asked him if he any STDs and he said he didn't and also ha been tested for them. I really need some help.

It could be possible that you are allergic. What kind of condom was it? Latex? Flavored? Did it have spermicide? All of these could cause an allergic reaction. Try Polyurethane condoms without spermicide - But make sure you use plenty of lube ( Waterbased!) See if that helps.

Or it could be a yeast infection. You can go to a pharmacy inside of a grocery store and buy the cream that gets rid of it within a week. Ask the pharmacist to help you with any questions.