she may be extra horny for a week. if you're drooling just looking at a guy, then there's a good chance.

.....and there is so much more to this very important state. Yes a woman should take note of her moods, but physiologically there are so many other aspects. A woman is her most appealing, and most receptive. Men will respond to her - pheremones are one reason for this, and if she notices she might be glad of positive attention she recieves.
There is a change in the texture and height of the cervix, and of course the consistency of the mucous, and if you're tuned into your body you will feel the tugging sensation as the egg releases into your fallopian tube, etc, ...