breast lumps breast lumps breast lumps

I'm 20 years old.
Only person who had breast cancer in my family was on my mothers side (my grandmothers sister)
She was 60.
I have been doing monthly breast exams  for couple of months now and  I've felt a hard Lump in my right breast.
Only if I dig my fingers in! 
It's not round like a ball it's more like a thin thin thin little sausage. About the size of my top of my finger.
I CANNOT feel it when I lay down. It hurts when I press 
My breast are 34d
Can anyone give me a peace of mind :(