You have the diagnosis of coronary disease. This is on the fifteen prohibited conditions, listed in FAR 67.311c. This is grounding until you have a special issuance.
For a third class you need to wait 180 days, provide a stress treadmill to >8 minutes in the "Robert Bruce" protocol, and accomplish a heart rate greater than 90% of (220-YourAge), a current status letter from your doc, Fasting lipids, Glucose, Creatinine.