I'm a 32D even though I look more like a B. I've noticed yesterday that they seem a little heavier/bigger than they used to be. I know they get bigger when you're pregnant, but I'm not pregnant and I should be done growing.

I've been on BC for 3 1/2 years now and have had no side effects.

I'm currently taking zyprexa and lithium, but I don't see how that can cause my breasts to grow.

Any idea why this is happening?