What are some signs of a blood clot in your lungs?

Many....: shortness of breath, rapid heart rate, rapid breathing, chest pain with breathing, possibly cough and low grade fever, wheezing, and even cough with blood in sputum. The question here is do you have risk factors for this (long travel, blood clot history, autoimmune conditions, etc.)? If you suspect a blood clot in your lungs, you should be in the ER getting tested and treated.