I've lost 3 lbs since starting on the pill for my pcos and yet my boobs have gone up almost one full size! I am around a G now. Will this side effect go away or should I try a different pill or will they all do this? Is it the estrogen? Should I go on a low estrogen pill? Also they are always ALWAYS sore.

That happened to me as well but I was very glad for it. I used to be a B cup, then went up to a C and more recently I am busting out of my C cups. I would definitely talk to your doctor about it.

I'm on a low-dose pill and the girls have definitely gotten fuller....I'm a 36-C but need to try on some 36-Ds....my shirts are pulling?

Yeah it's from the estrogen. I'm on the pill for endometriosis and my boobs are huge from the pill and hurt a lot of the time, too.

(And I'm on Loestrin, a low-estrogen pill!!)

it's definitely a bummer