I went to the gyno for the first time last year at 18 and he found a pea-sized lump in one of my breast. He said not to worry about it, it was probably a cyst, but I went and got an ultrasound anyway because for some odd reason they wouldn't do a mammogram. Not sure why either. Luckily it was a cyst and my grandmother and aunt both deal with cysts, so it could be my genes there.
But I would never try boob enhancing pills. I've been on the pill for a year and nothing has changed. Boobs are still A's and i'm fine with that.