If yasmin caused blood clots, then you were obviously predisposed to getting them in the first place.

It is difficult to know exactly who will have side effects on birth control, so it is trial and error. There are non hormonal birth control methods that work wodnerfully.

Have you considered an iud?

Some of the people that I know or have talked to have generally once they have gotten the coumidin under somewhat control only have to get their blood tested once a month, hopefully this will be your case in time.
Their are a lot of meds out their that have major side effects, look at vioxx and what happened to some people who took that. I was told that ibuprofen and aspirin can thin your blood and can cause stomach problems and look at some of the side effects of some of the other meds. They generally give you handouts when you get a med or you can ask for one or check it out on the computer. I take several meds due to pain and my neuro situation and I have to be careful on a new med to make sure that they mix with the other meds I am taking and I am always leary of the side effects sometimes even some of the natural meds.
I am sorry this had to happen to you!

Yes, there are side affects, but I also feel that women are not duly warned about the serious side affects and more subtle negative consequences of hormonal birth control. Altering your hormones affects almost every part of your body - sleep, mood, hard to build muscle and lose weight, and more serious things as well. I got off it after 8 years on the pill to cleanse my system and suffered serious insomnia for 2 weeks. No doctor ever warned me that could happen. I think the drug industry encourages us to be on birth control and every time I visit a gyno, they always try to push it on me.