I had cancer last summer&a few months ago on my shoulder close to the spot is a 3 month growing lump. there's cancer in the family. should i worry?

Whoa!: You had cancer last summer? You are a sixteen year old female? You have a mass that you have not had examined for three months? Cancer is rare in people your age; the vast majority of teens with genuine cancer know what type and have been educated extensively about it. You need to sit down and have a talk with your personal physician and learn exactly what has happened ; have the shoulder seen.

It should be examine: The diagnosis is unknown. You should be seen by a health-care provider.