im taking it. starting it after a bfp - there is a good bit of debate as to whether or not it does anything at that point. it's likely that the best use of progesterone is in the few days between o and implantation. once your hcg levels start rising, your corpus luteum should get the message and kick up production on its own fairly soon after. even if it doesnt, it's not for sure that the endometrium responds to extra progesterone, like from prometrium, after that point. that may be why your doc hesitated. you can google it for info on starting it after a positive test, there is a lot of info out there, and it's essentially inconclusive. from my point of view, i think taking prometrium is unlikely to cause a problem- there are hundreds of thousands of babies out there born to moms who have been on it, and there is no problem evident, so for me, it seems taking it might do some good and probably wont cause any harm, so it seems worth it to me.
im glad your numbers look so good, too. that's awesome.
just fyi for the other ladies here dealing with this- i tried unsuccessfully to get pg for 7 months on vag suppositories of prometrium for luteal phase defect. i switched to oral prometrium, stopped luteal phase spotting, and got pg that first cycle (also first soy cycle, so ?) in any case, when i got a bfp, my beta was 12 and p4 was 32, which was great. my doc switched me to vag prometrium again, because technically, oral is not approved in pregnancy, even though it is used that way all the time. a week later, my beta was only 14 and my p4 was 4. what does that mean? well, i dont really know. either it means my progesterone supplements had no effect on my serum progesterone and the level went up and then down based on the health of the baby, dropping because i was losing it, or, the vaginal suppositories did not work for me for whatever reason, only oral, so when i switched the level bottomed out. i think it could be either, or both even. but this time, i am staying on oral prometrium, just in case.