Continuous headache and off balance a bit. i have also had heart failure two years ago and heart attach six months ago. i am also a big man in my 60's?

Need and exam + MRI?: Your headache may or may not be related to your lack of balance. You should see your physician as you may need an MRI of the brain. A careful history and neurological exam will be necessary to establish the cause of your symptoms. You won't be able to self-diagnose these symptoms on the internet. See your physician soon. Best wishes.