The failure rate of vasectomies (or the chance of you becoming pregnant) is about 10% in the first year. Your partner's doctor should verify the success of the vasectomy at a checkup 3 months after the procedure. Until then, you should rely on a backup birth control method.
For the first few weeks after a vasectomy, a condom should be used during sexual intercourse. After residual sperm are eliminated, the chance of pregnancy is essentially zero.
There is about a 99.99% chance of getting pregnant. Even if some sperm managed to escape (unlikely), if there was a small amount of sperm, you probably wouldn't get pregnant.
there arent any chances. yes, your partner can still produce sperm, but it can not leave the body any more. you shouldnt get pregnant from him anymore after the procedure.
Usually, there is no chance of pregnancy. However, it does depend on the type of vasectomy - if he had a reversible one there is a minute, exceptionally unlikely, chance.
You can, but the odds are not that likely. It's like putting a kink in a hose that will never be removed. The only reason that you would is if something was not done right. I would not worry too much about it because that is it's purpose to stop babies.
There is no chance of you becoming pregnant, the tubes that deliver the sperm are tied when a vasectomy is done, so when he orgasms, no sperm will come out.