How much weight do you think i've lost?

No, i'm not one of those silly people that starves themselves on purpose. Since Friday, i've had a flu type thing. My appetite has gone, and i have had an upset stomach to so nothing's really staying in me. I've force fed myself a bowl of cornflakes, and a curry. They haven't stayed in me. It's the 3rd day now. How much weight do you think i've lost?