Sarah,
No...I don't have AVM's. And I think that using Provera is good in some cases. And it is usually a choice for the first step in amenorrhea (lack of period).
I just read your previous post....I think that "unopposed estrogen" in this must mean anovulatory. If you don't ovulate, the body doesn't produce the progesterone...and the estrogen builds up...thus unopposed estrogen. ;D
An estrogen build up in someone with AVM's would be a good question for Dr. Burrows. Maybe progesterone would be good way to help this? Maybe the estrogen build up could cause more issues in relation to the AVM? It could be that the gyno's right....but really should have suggested a relationship between themselves and the vascular docs during any type of hormone treatment? Brainstorming now.
I use it because I've had anovulatory cycles....but my midwife always waits until at least 3 months of no periods before she prescribes. The only reason she lets me use a home test for the pregnancy, is because we've developed a relationship....and she knows that after 3 years of trying to concieve another child I know my body well. My husband calls me his back country midwife... :

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My opinion of the depo provera shot for birth control is vastly different!!! It is what caused my anovulatory cycles in the first place. I call it the evil depo shot....and don't advise it to anyone. But that's just my opinion, and probably a topic of an entirely different forum. LOL Ironically the drug with the cure is the same drug that did this to me.
And I guess I really don't know the implications of AVM's and any problems with menstruation. But it's very interesting. Let us know if you find something out?
Julie