Pumping foremilk..

Ky • Married to my best friend👩🏾❤️👨 Living in Europe Mommy to Marcel 🌈👶🏽

Hey ladies quick question.. If I'm pumping foremilk during one session.. (2oz) can I mix it with hindmilk from my next session in a couple hrs and store it together in the fridge/freezer? Or do I have to throw out the foremilk?