ftwelder- your body is telling you something is not right. Don't delay; see your doc. Too many men ignore warning signs and regret it. It may be nothing to worry about, but you won't know until you've been checked out.
p.s. on re-reading your original post, the symptoms you describe are similar to those experienced by a 74 year old guy in our group. He didn't see his doc and suffered sudden cardiac arrest a couple weeks later. He survived thanks to his companions being ther to help and the EMT arriving in about 5 minutes.
We should all learn CPR!!