[surferjoe2007]

progesterone:
http://en.wikipedia.org/wiki/File:Progesterone_during_menstrual_cycle.png
3-35, average 14 nmol/L

estradiol:
http://en.wikipedia.org/wiki/File:Estradiol_during_menstrual_cycle.png
50-800, average 325 pmol/L

prolactin:
http://en.wikipedia.org/wiki/Prolactin
average ~295 mIU/L

testosterone:
http://upload.wikimedia.org/wikipedia/commons/c/cb/Blood_values_sorted_by_mass_and_molar_concentration.png
(near the bottom and towards the left in light blue)
0.7-3 nmol/L

Average progesterone
Average etradiol
A little high prolactin but probably normal
Average testosterone
Congratz you seem pretty well balanced.

For NBE try steroidal saponins (fenugreek, wild yam, goat's rue or shatavari) or maca since they have a balanced overall effect. Anywhere from 2 grams whole herb to 2 grams 50% saponin extract (effectively ~60 grams) and up. There isn't really an upper limit but start low and see what you can handle.

Or if you also use an herb that affects estrogen or progesterone, be sure to get something that affects the other one to balance it out. Use both. Amounts vary on these so find out what is a proper amount. Could be 40 mg or 2,000 mg, depends on the herb.