It depends. It probably dies faster drying out then inside a body. The inside of a vagina is a rather harsh environment, but it is certainly POSSIBLE for sperm to survive several days inside. If the semen hit clothing or something and dried up, the sperm would die quickly.
...if you are worrying about some having made it into you, you have good reason to worry. If it's just a general question the answer is very easy: sperm dies after one of it's own completes the journey into an egg!!
Yep, you're definitely pregnant. Hey, just going with the general consensus. I don't know why everybody's so uptight about stuff. "OmG my boyfriend jacked off yesterday then he touched my pussy today I'M PREGNANT!!!11!1oneone!@11" Just don't be an idiot and it's not too hard to avoid pregnancy.
