yes.
Not unless you had no barrier when you ejaculated into her. If you had the condom on and ejaculated into the condom while you were inside of her, then exited her and changed condoms (unless the condom broke) you could not get her pregnant. The only way for her to get pregnant is if you ejaculated into her or emptied your fluids into her (and most condoms have spermicide). If neither are the case, it is nearly 0% chance that she could get pregnant.
yes
Condoms are a good source of contraception if you use them properly, and they do not tear/break. If the condom didn't tear/break then, even if they did ejaculate inside you, there is very little chance you would get pregnant.
Yes, if the ejaculatory fluids came in contact with your vagina you can get pregnant.
yes
Yes, that's how pregnancy usually starts.
There is no known percentage for definate. if you use a condom then there is roughly a 5% change of getting pregnant, where as if you use no protection or contraception, the risk is considerably high. if you dont want to become pregnant you may want to consider birth control, and also without a condom you run the risk or catching an STI or STD.
there really wasn't much information for an answers. but here we are: if he ejaculated inside there is a chance, if he was wearing a condom and ejaculated there is a small chance, if he didn't ejaculate there is basically no chance.
Put a hole in condom.
Excellent.
There's a 25-75 chance favoring that you would not get her pregnant. You could use a condom and not get her pregnant, or you don't use a condom and you have a chance at getting her pregnant.
there could be a possibility but it is very much rare to get her pregnant.