I started wearing coloured contacts, when I remove them, the whites of my eyes are yellow. Any guesses why?

Answer 1

nine times out of ten, when the whites of your eyes are yellow it's due to dehydration, the body needs 2 liters of water a day to function optimally, if you don't drink that much, the body robs less important areas to make sure the essential organs get the water they need, obviously, you don't drink enough water.

Answer 2

Its better to consult a doctor