Pulmonary edema symptoms may appear suddenly or develop over time. Symptoms depend on the type of pulmonary edema. Sudden (acute) pulmonary edema symptoms 
Difficulty breathing (dyspnea) or extreme shortness of breath that worsens with activity or when lying down
A feeling of suffocating or drowning that worsens when lying down
A cough that produces frothy sputum that may have blood in it
A rapid, irregular heartbeat (palpitations)
Anxiety, restlessness or a feeling that something bad is about to happen
Cold, clammy skin
Wheezing or gasping for breath 
 Long-term (chronic) pulmonary edema signs and symptoms 
Awakening at night with a cough or breathless feeling that may be relieved by sitting up
Difficulty breathing with activity or when lying flat
Fatigue
More shortness of breath than usual when you're physically active
New or worsening cough
Rapid weight gain
Swelling in the legs and feet
Wheezing
 High-altitude pulmonary edema (HAPE) signs and symptoms HAPE can occur in adults and children who travel to or exercise at high altitudes. Symptoms are similar to those that occur with acute pulmonary edema and can include: HAPE 
Headache, which may be the first symptom
Shortness of breath with activity, which becomes shortness of breath at rest
Not being able to exercise as much as you once could
Dry cough, at first
Later, a cough that produces frothy sputum that may look pink or have blood in it
A very fast heartbeat (tachycardia)
Weakness
Chest pain
Low fever
 Symptoms of high-altitude pulmonary edema (HAPE) tend to get worse at night.