Acne Alert?

Is it because of the weather or am I developing adult acne? My officemates have noticed that I have two big spots in my cheeks, and since these spots were flat, I thought they were just mosquito bites. That, or me wearing eyeglasses had something to do with it. However, It’s been days already and the spots went up from two to three. Now this should get me alerted (vain vain vain?). If this persists then I have no choice but to buy a good natural acne treatment that would suit my skin type (I’m allergic to Benzoyl Peroxide, the common solution for acne). Please please please… hope nothing will erupt soon.