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.
Also, it may be your insurance wouldn't cover it if you get it prior to the recommended age. Not all insurance coverages would but if they're going be established clinical appropriateness standards, to determine coverage, it could be excluded.
The explanation that my lungs are "injured" makes a lot of sense. I have no other immune system issues so I'm just gonna wait until next July! Thank you.