Ok i need help i have big breasts i check my breast everyday cancer runs in my family bout to be 30 years old do i have a greater risk of all cancers?

Can't tell: As a rule, cancer is not common in young folks like you but as you pointed out, a strong family history may be a sign of an inherited high risk trait. The info you provide is not enough to say much, though. My advise: talk to your family doc or gyn and see if you need an evaluation by a specialist in risk assessment and genetics. Best to you.

Not necessarily: But have a clinical breast examination(cbe) by your doctor at least once yearly. He/she can guide you further.

Maybe: Breast size is not a factor. Heredity can be, and if your family members were young when they got the disease, you might be checked for BRCA1 and BRCA2 mutations. A daily check isn't so helpful as checking at the same time each month, with mammography possibly in your future.