I have a light patch on my right cheek. It's not a rash and it doesn't itch. It feels like my regular skin but it's discolored. Should I be worried?

Likely Innocent. It's best to examine in person, or to see a photo, to evaluate size, shape, color, context, features of its border, etc. from what you've provided, flat, smooth, non-raised, hypo pigmented, non-itching lesion, most likely innocent, but cannot diagnose without larger context. .