i see, thank you very much for your help :)
Sperm dies pretty quick when exposed to the air. I think you're over-thinking this one.
but still... what if for X reason i got precum on my fingers, but ive been really cautious so the amount would be minimal and prolly not even visible, im just worried xD i might be thinking too much about this
You haven't had sex, she isn't pregnant.
Sounds like it is the weather and maybe the flu. Also, she really should eat more often because that can also make you very ill. She needs to eat 3 solid meals a day. If she doesn't get enough calories her body will begin to store fat instead of burn fat and she will gain weight (if that is what she's worried about). It's just not healthy for your body.
She can't get pregnant from fingers. Sperm is what gets a girl pregnant.