33m. had a unprotected oral (receive/take) and protected contact on 24 july. if i had contracted hsv when will it show up? will washing genitals help?

Approx. 1 week: HSV symptoms typically arise within 7 days of initial infection. Washing is not an effective means of prevention. For more information visit the CDC website here: http://www.cdc.gov/std/herpes/stdfact-herpes.htm The only way to prevent STD is the proper use of barrier protection. However, outbreaks can also occur in areas not covered by a condom so condoms may not fully protect you from herpes