Birth control w/phytoestrogens

[Celestia]

I am a young female who looks too young - I never developed breasts.  I don't know why.  I otherwise look my age (20).  I don't want surgery or anything.  I just want to develope normally.  I looked into things and found that phytoestrogens (a form of estrogen that comes from plants) is related to breast growth but is used for menopausal women.  I found a suppliment that comes from some kind of seaweed or something.  From what I have read, it seems safe.  It's even been shown to keep cancer at bay.
My question is this:
I take birth control (ortho evra) and am sexually active - will this new hormone in my body interact with my birth control and make me fertile?
Also, if anyone has any idea why I have no breasts, insights appreciated.
- Waited Long Enough For Measly A-cup

[AnnJ]

Not everyone is blessed in the boob department. Not having breasts does not mean you developed incorrectly or not at all. Consider yourself lucky, you don't have to deal with underwires, you can wear all those cute little halter tops, you'll still be perky after all your friends have started to sag, you don't have to worry about your breasts bouncing around when you jog or dance. It's amazing, those people who have small breasts wish they were larger, those with large breasts often envy those without the backaches. I know this may not make you feel better, but take heart: I grew from a 34B at 18 to a 34C when I was 20,then a 34D at about 23, to a 36DD at 26. I didn't take any drugs or hormones. If I knew how to make them stop growing, I would do it. But what I'm getting at is, you still have years to continue developing. 20 is still quite young.

[cugirl]

I found this online:
  The effects of phytoestrogens on women taking birth control pills or being treated with postmenopausal hormonal therapy have not been examined. Both of these treatments use estrogen, and since phytoestrogens can act like the hormone estrogen, phytoestrogens might disrupt or amplify the effect of the estrogen in individuals with a diet very high in phytoestrogens. However, such effects have not been reported in groups of women who have diets high in phytoestrogens.

I would say you would need to discuss it with your OB/GYN because your B/C contains estrogen levels.  Having your estorgen levels too high may cause some problems but discuss it with your doctor.