But then what is the explaination for the late period and sore nipples?
maybe did she have a slight spot on her sweat shorts and underwear
Not unless she took that hand and touched herself between her legs with it.
No. The sperm needs to be in contact with her vagina, unless she was wearing your underwear she is not pregnant.
yes, you can get pregnant
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.
no she can't get pregnant.
Yes, the way to get pregnant is by someone ejaculating inside you.
yes
Yes
maybe
yes, there is a chance you can get pregnant from that
No, if there is no actual penetration then the odds of insemination occurring are very slim.