Pulmonary Embolism Support Group
By far the most common form of pulmonary embolism is a thromboembolism, which occurs when a blood clot, generally a venous thrombus, becomes dislodged from its site of formation and embolizes to the arterial blood supply of one of the lungs. Symptoms may include difficulty breathing, pain during breathing, and more rarely circulatory instability and death.
It is really common for your INR to fluctuate. I know people on for life. They will be stable for years and then one day their INR goes wacky. They change their dose and stable again, but on a different dose.
1.8 is not a bad level. You are well outside of normal range, and not at high risk for developing a clot, so don't get too worried. Lots of things can affect your INR. Also, they take their one measurement but I believe your INR actually fluctuates during the day, not to mention between days. Vitamin K intake, alcohol, digestive issues can all affect your INR.
Hope you are feeling better soon.
Sounds like you've really had a rough time but good job your head is ok :-)
I don't know what caused your INR fluctuation, but themedulla gave you the most obvious reasons. Could just be because you're feeling tired down - who knows?
Trya nd get more sleep, keep an eye on things and hopefully they will get back to normal.