My mom who often suffered from Thrombosis (blood clots mostly in the legs) is homozygous (the gene in both chromosomes) on Factor Five and is on constant blood thinning stuff now.
So a couple years ago when this Factor Five became more known me and my sister then also got tested. Believe I'm Heterozygous (gene in one chromosome but not the other) on it myself.
(so in this case still a slightly higher risk than normal, different than how that works with CF for example where you just become a carrier, and something to keep in mind atleast. Fe. I stopped using vitamine K that thickens blood.)
I think it's a good idea people get tested on it if Thrombosis runs in the family so they can keep it in mind fe. with long hospital stays and types of drugs. And if you've got the gene in both chromosomes even to start with bloodthinning medication because you've got a really high risk of blood clots forming then.
Do you have it in both chromosomes?
To have it in one is not unheard of, some five of a hundred people will have that. On both chromosomes is rare indeed, about one in five thousand.
Sorry to hear and hope you recovered well!