VaginaPagina

http://www.nlm.nih.gov/medlineplus/druginfo/meds/a604017.html says that progesterone can cause "abnormal clotting."

And http://www.nlm.nih.gov/medlineplus/ency/article/007111.htm says, "Doctors have long known that taking estrogen increases a person's risk for blood clots. Generally, this risk is higher if you use birth control pills, which contain high doses of estrogen. Your risk is even higher if you smoke and take estrogen. The risk is not as high when estrogen skin patches (transdermal estrogen) are used."

http://healthfinder.gov/news/newsstory.aspx?Docid=659549 says: "The review also found that women on two other forms of birth control -- the Ortho Evra patch and the NuvaRing vaginal ring from Merck -- had a higher rate of clots."

It also says, "But the absolute risk of blood clots associated with the newer pills remained relatively low, about 10 per 10,000 women, according to the University of Copenhagen researchers."

Sounds like both estrogen and progesterone can both raise the chance of blood clots (though pregnancy is worse than any HBC thus far, for increasing that risk), and newer progesterones tend to have a higher risk (though still quite small). Presumably progeterone alone has a lower risk than a combo pill.

This is why I asked because I know a lot of people that have been put on progestin-only BC pills because that is all their doctor would allow when they had Factor V Leiden. Progestin-only is supposed to be safer for those who are over 35 and who smoke and those who have blood clotting issues. That is actually one of the reasons I chose progestin-only because I'm paranoid and don't want to take something with estrogen in it. I too have endometriosis and so far have liked my progestin-only and has helped the pain and bleeding.

It sounds like you should be talking to someone who is well-read on this topic and establish what your risks are, should you be on any form of HBC. It may be that the risk would be acceptable, to try to control the endometriosis situation. It may be that you would not consider the risk acceptable.

Crossing fingers for you!!!!

I believe that certain types of progesterone, including the progesterone in the patch and the ring, have higher risk of blood clot than others. My understanding is that other types of progesterone are NOT contraindicated for people with additional risk factors.

Nah, POPs use progestins that are also available in combined pills. http://en.wikipedia.org/wiki/Oral_contraceptive_formulations

I was 24 when my gynecologist put m on the nuvaring to control my endometriosis. 7 months later I had a massive stroke!Nuvaring is a bad idea!