Nose piercing problem??

Okay so I got my nose Pierced on the 10th of November. It was healing up all nicely and i was and still am cleaning it twice a day with warm water and applying savlon as instructed by my piercer. Then about a week and a half ago a spot appeared above it, I had it for about 5 days then it disappeared for about 2 days then it came straight back again and has been getting larger and larger. Does anyone know what this is? Or is it just a spot ? And how can I get rid of it