What to do low blood pressure and having trouble breathing?

Few possibilities.: Depends on how long u have breathing diffi.And low bp. You are young. Not sure if you have any other symptoms like heart rhythym abnormalities, dizziness, racing heart, chest pain, fainting like feeling. Cardiac valvular diseases, can cause above symptoms. Similarly cardiac mucle , heart failure, cad, viral heart dz. To be r/o .Other problems adrenal prob , anemia, pneumonia, blood clots-lungs can +.