Hi, I Am 77 And Have Noticed That My Right

Hi, I am 77 and have noticed that my right breast has increased in size over the few months. I have always have had large breasts (a G or H cup) with a 40 or 42 chest measurement. I do regular monthly breast exams and have yearly mammos. I do not feel any lumps or anything unusual in that breast...

Is this something I should see my doc about or if not my general doc... Should I see some other doc?
Beth