When the arteries in our heart become clogged due to calcium deposits, then excess presure is put on the heart to pump blood to various organs. This would lead to heart attack.
Not always we can get heartattacks with signs like chest pain, excess sweating etc. We could also get heartattacks in the early morning with silent signs Various silent signs of heartattack in the early morning are
Waking up in cold sweats:
As there will be more pressure on the heart to pump blood throughout the body due to clogging of the arteries, the body would sweat more to keep the temperature down. Therefore, when a person wakes up with cold sweat then he or she must consult a doctor immediately.
Persons before heart attack in the morning could have issues like indigestion and GI bases issues etc. Many persons consume antacids assuming that it could be due to acidity or acid reflux etc. This is mostly done by older adults.
It must be noted that nausea might be accompanied by stomach pain after waking up. Issue of vomiting would be there in some persons. The contents present in the stomach would be forced out through the mouth. Doctor must be consulted.