No, they didn't bite you all over your torso because they are web-spinners (order Embioptera), and they are completely harmless. You must have some other biting insect, like mosquitoes, bed bugs, or fleas.

Check if it has a sting then kill it, if it doesn't it probably won't bite, but if the girls are too young they may put in their mouth and that's something you don't want

No idea - but how do you know that's what's biting you?