and a huge congratulations!!!
I don't know about numbers. I'd think as long as the progesterone is at a good level, you are good to go. But I really don't know numbers.
As for grapefruit, sure can't hurt unless
you are on medication that contraindicates grapefruit (Like Lipidor, for instance. I know there are others but I don't know them)
And I don't think grapefruit makes estrogen, I think it's more a case of resetting your estrogen receptors but it's been a while since I've read up about it, I am probably wrong.
Soya and yams give phytoestrogens. I ahve a Chinese friend who makes me soya milk and she says to drink one cup a day, no more.
The first trimester is soooo hard to live through. Hang in there. (yeah, easy for me to say, eh??)
Fingers crossed for you
me:43, DH 44
DS: born by c-sec Apr15'03, 9lbs5oz 41wks gest. (after 4 years of ttc, starting in 1998)
DD born by c-sec Oct 13 2007, 8lbs13oz 39wk gest. (after just under 3 years of ttc)
~~DS was conceived naturally the cycle following a cancelled DE IVF, using my good friend's eggs. She was on the verge of hyperstimming.
~~DD's nat conception I attribute to using OPKs like a crazy nut, eating grapefruit daily and using preseed. also 5 cycles of TCM ending 2 cycles before that lucky cycle.