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.

My take is this: if you think something is wrong, go to the doctor. If they can’t find anything wrong at some point you have to chalk it up to recovery.
One thing for sure....recovery is different for everyone. There are twists and turns and it's very individual. We'll all get to where you are now...healed and knowledgeable. But, the road is long and uncertain at times. Thankful to you & others who calm us all down!