Maliliit na bukol sa kilikili

Hi, im 17weeks pregant. Pinacheck ko last time sa OB ko yung kili kili ko kasi may nakakapa ako maliliit na bukol na medyo masakit. Sabi nya, nothing to be worried about naman. Pero feels like everytime na kakapain ko, dumadami sila eh. Btw, my mom just died because of breast cancer and shes just 48. Her sister also died of the same cancer and died at 49. Kaya im very worried. Naexperience nyo din ba ito?