[goosebump]

I experience the same thing. My skin is at its worst during the 3rd week of my cycle. It stats to get better before my period, and during and after its very clear and nice. Freaking hormones.

I know right. It used to confuse me so much.

Since most estrogen dominant women lack progesterone, I think our skin probably gets worse due to a lack of progesterone in the last 2 weeks. Usually, progesterone's supposed to increase at that time, as shown here
http://en.wikipedia.org/wiki/File:MenstrualCycle2_en.svg

Since estrogen dominant women do not have enough progesterone to balance the estrogen out, we experience all sorts of havoc, including worse skin. I'm going to add progesterone cream to my regime soon. Hopefully my skin will get better along with some boobies growth.