Since the past 4-5 months I have started getting white spots near my chin area and one under my right eye. When it started I thought they were white heads but with time, they have not gone, like a white head would. I notice a new one emerges usually before I get my period (which are regular). I have 2 prominent ones and several smaller ones. I have normal to dry skin and have never had any problems with my skin before. What are they and what would be the treatment for this?