hi no any sperm on your penis would be dead as soon as it dried or before even but there is also a chance of sperm being in pre-cum not many but it only takes one sperm at the right time of the month. now the telling off ok your young dumb and full of cum but never thought of condoms has your g/f never thought of the bc pill or the cap an iud but do keep her away from depo shot tell her to google depo shot side effects that will put her off it. but never have unprotected sex unless you want a baby. good luck
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?