Sudden swelling in one leg or arm
Pain or tenderness in one leg or arm, especially in the calf
Warmth, redness, or discoloration in the affected area
A leg or arm that feels tight, heavy, or sore
Shortness of breath
Chest pain, especially if it gets worse when breathing in
Fast heartbeat
Coughing up blood
Sudden dizziness or fainting
Severe headache, trouble speaking, weakness, or numbness on one side
One side of the body feeling weak or numb
Seek emergency care right away if you have chest pain, trouble breathing, coughing up blood, fainting, or stroke-like symptoms
Get medical help soon if you have leg or arm swelling, pain, redness, or warmth, especially if it is new or only on one side