Sharing makeup??? S:?

I left my makeup bad at my friend's house awhile ago. So the next day I took it back and used it for days. And then today I found out that she used my eyeliners, concealers, blushes, eyeshadows, eyelash curler and mascara. Do I have to throw it out? Because they are very expensive and I have been using them and nothing has happened to my eye yet..but do I have to throw it out still? thaanks!