If whenever I look at a light and there is a white haze around it, what does that mean?

Today when i woke up, everything in my left eye had a white haze around it, espicially when i look at a light. Yesterday i went in a tanning bed withoiut any goggles but i dont think thats the problem, and i switched out contacts to see if that was the problem, but its not. I also have a cold right now, so could that have anything to do with it? Thank you!!!