I have a lump in my breast that rolls, it was found by my OBGYN 2 years ago she sent me in for an ultrasound and they determined it was nothing. But 2 years, a baby, and almost a year of breast feeding later, it is still there. I have my yearly in 2 months, but do I need to get it checked again before then? Or is it ok to wait till I see my OBGYN at the end of Dec?