HI, my name is jennifer and i am turing 18.. i have had this thing behind my ear but on my head.. it is getting bigger.. it is really hard like a golf ball.. i am scared that it is cancer.. i cant get checked up because my family split up and left me.. long story.. but i dont know what i should do.. i am soo scared that i am going to end up getting cancer.. if there is someone out there that can help me i will really appreaciate it.. and god bless you..

please help me
jennifer