[Harmony♥]

Question 1: If you washed your hands, then no. Even with a little bit of washing, there is literally no chance for the sperm to have possibly gotten inside your girlfriend's vagina.

Question 2: Once sperm hits air, most of it dies, and quickly. It needs a moist area in order to live, like inside the vagina. Is air moist? Not normally. Therefore, when sperm hits the air, it dies and washing with soap and water will remove any other "leftover"'s that might have been sticking around. (however, you should always wash your hands before and after fingering your girlfriend. It's the sanitary thing to do).

Question 3: Pre-cum itself does not contain sperm. It only contains sperm if you ejaculated previously, and didn't urinate afterwards. Urinating, since you urinate and ejaculate from the same hole (called the urethra), it pushes out any extra left overs. Washing your genitals after with mild soap and water will ensure a clean area with little chance for "leftover" sperm and/or pre-cum. If you urinate several times after ejaculating, there would be no left over sperm.

Question 4: Yes, urinating once after ejaculation will remove any access sperm from the urethra.

So, in all honesty, it seems you're freaking out over nothing. There is only one possible way for a girl to get pregnant, and that's through sex. Vaginal intercourse. She cannot get pregnant from oral or anal sex. Even if you tried, it just wouldn't happen. Stop worrying, and enjoy being intimate with your girlfriend. She can most likely sense that you're nervous during the course of being intimate, which isn't a good feeling for us.