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.
Hope you feel better soon.
From what I gather, though, mild flu symptoms are to be expected.
If symptoms persist, of course, call your doctor.
Now there's always a (very small) chance that you could have a reaction to a flu shot, but the odds and/or severity don't rise just becase you might be on Warfarin/Coumadin. In my opinion, the illness is worse than the prevention.
My reaction (or lack thereof) is different each time. Some years, it's just a sore arm. Other years, I felt like I got sick for a week. But most of the time, it's a mild combination of sore arm and general achey-painey weakness like you feel a sickness coming on. But that lasts only for a day or three; far shorter than the impact of actually GETTING the flu.
When I was on Warfarin, I had already been through the wringer, what with my shoulder surgery, the PE, hospital stay, Lovenox shots, and the warfarin itself. And I was doing my PT for the shoulder, so I didn't want to get a sickness that would knock me out for a week or two and set my shoulder's healing and rehab behind schedule.
Plus, my logic (shared by my doctor) was that I just didn't need "one more thing" like pneumonia or a throat or sinus infection. And when you get colds, flu, whatever, you'll be at increased odds of getting an infection simply because your body's defenses were lowered.
There's also an increased risk of side effects of added medicines, like joint damage that can sometimes occur with certain antibiotics.
Again, it was that "one more thing" chain of events that I wanted to avoid (if I could).
If you're wondering whether or not to get a flu shot, talk to your doctor. Make sure you understand the risks (everything has risk). But I say yes, it's probably a good idea, especially if you're already tired of seeing so many doctors. :)