in the lungs.
The American Heart Association notes that some people may cough up white or pink, blood-tinged mucus.
A cough is particularly worth discussing with a clinician when it occurs together with:
* Shortness of breath
* Leg swelling
* Difficulty lying flat
* Unusual fatigue
## 6. Sudden Weight Gain
Unexpected weight gain over a short period can sometimes reflect **fluid retention rather than body fat**.
This is especially important for people who have already been diagnosed with heart failure.
The American Heart Association advises patients with heart failure to monitor their weight
