Yes. That is pulmonary embolism, pe (blood clot in lung). Most of the embolisms or blood clots come from the legs. In the confirmed cases of pe, they had found clot in legs in 70% of cases. Also good to mention not all the lung clots are symptomatic, i.e. In 40% of cases of DVT (blood clot in leg) they found silent pe( with no symptom).
Yes. It can cause a pulmonary embolism which is a very serious complication arising from a clot in the leg.
Yes. Clots in the leg (DVT) can break away and become trapped in the lung circulation. This results in difficulty breathing because the affected part of the lung cannot oxygenate blood. If the clot is large enough it can cause death. Any clot in the limbs is an emergency and should be evaluated in the er.
Yes. Either way, you should see your primary care provider. If the clot is in a deep vein in your leg, it has the potential to move to your lung and you need preventive treatment. An ultrasound of your veins would be needed. If you know you have a blood clot in your leg and you are having breathing problems, then you need to seek emergency care.