 [ Symptoms ] how long does residual sperm live on the penis  i masturbated this morning 10 am and did not shower afterwards i had unprotected sex much later in the day 9pm should i worry about getting my girlfriend pregnant does sperm survive that long [ Disease ] hi try this its just simple sea salt just use a couple of handfuls in a warm bath twice daily for a few days let the water get inside your vagina this should help the itching to stop do not use any soap just keep the sea salt water it will clean your vagina next when its gone away just use a natural soap on your vagina nothing else for more info just google sea salt and the vagina do hope this helps you good luck