Your sperm would not survive in the fabric.
No. The sperm needs to be in contact with her vagina, unless she was wearing your underwear she is not pregnant.
maybe did she have a slight spot on her sweat shorts and underwear
It is highl;y unlikely. her panties would absorb the semen and kill the sperm.
No your fine.
It only takes one sperm, so it's unlikely but possible you can get pregnant if one sperm got through.
ofcourse you can
Not unless she took that hand and touched herself between her legs with it.
yes, you can get pregnant