Dad, age 72, suffers from heart disease and had an angioplasty procedure for repair to a 99% blocked artery . This is his 5th stent procedure received 3 days ago. He is experiencing tremendous fatigue unlike ever felt before from previous stent procedures. So much to the extent that he gets fatigued every 3 hours and wants a nap. He has added Coq10 to his daily regimen of medications, at the advice of his physician and is on Plavix, baby aspirin, cholesterol meds. Could he have developed a blood clot? How soon after procedure would normal vitality return? Thanks-