My breasts are also different sizes.

My right is an average B and my left is a large C. I buy my bras in size C and I always buy the type that have the small padding things that can be removed - and I remove the left one and add it to the right side (so that the right side has 2 pads and the left side has none).

And then they look like they are the same size.

I don't know how old you are Angel, but have you ever gone to have a yearly pap smear and gynological physical? Part of that yearly exam includes the doctor checking the breasts for abnormalities like lumps, bumps, etc...

If you have had a yearly exam with a breast exam within the past year then the doctor would have noticed any abnormalities. If you have not had an exam within the past year, or if you have never had an exam, then you might consider calling a gynocologist to make an appointment for a pap and physical exam.

Although many women wait until they are over 18 or sexually active to start having yearly gyno exams, I believe the current recommendations are for females to have their first exam within a year of having their first menstrual period, and have follow-up exams every year after that.