nope... you can't wash up that far and the sperm swims fast.
Yes
Yes
Yes
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Yes, performing ghusl (ritual washing) is required after engaging in fingering if it leads to ejaculation or sexual discharge.
While it is less likely to get pregnant if ejaculation occurs outside the vagina, there is still a small chance of pregnancy due to the possibility of sperm making its way into the vagina. Washing with soap afterward does not guarantee the elimination of all sperm, so it is important to use contraceptive methods, such as condoms or birth control, to reduce the risk of pregnancy.
The Tudors washed by getting a bowl then getting and old rag and washing themselves with it :]
Start with washing it. :-D
The chances of getting pregnant from this situation are generally low, especially if you washed off immediately after ejaculation. However, sperm can survive in the vaginal canal for a short period, so there is still a possibility, particularly if sperm was present before washing. Given that you were on day 12 of your cycle, which is around the time of ovulation for many women, the risk could be higher if you were ovulating. If you have concerns about pregnancy, consider taking a pregnancy test or consulting with a healthcare professional.
diptheria can be prevented by getting shots and washing hands
No, it isn't. By washing your hair everyday, you're getting rid of your hair's natural oils that keep it healthy.