Hi Clare,
Nice to meet you as well. Yes, I am in the US. Factor V Leiden is a blood clot mutation gene which increases your risks of developing blood clots. The reason why I was tested for it was because my brother tested positive for it after my father passed away suddenly from a pulmonary embolism in May. Since then another brother has tested positive. I went to a hematologist and he ran another series of tests one of which was the homocysteine level. (This is not a normal bloodtest here either. I never heard of it before.) This came back high which he said was an indicator my blood was forming bloodclots and an early warning sign of heart disease. He told me to start taking folic acid, b12, and b6 which I could get from taking vitamins. He said that should help. I have to go back in 3 months.

I also have a problem with my thyroid. Did you ever have yours tested? Good luck with your test results. I hope the doctors find some solutions for you! Take care of yourself!