I just saw the cardiologist, and he said that my EKG looks better than in the past, which is nice to hear given the effort I put into my health. He said he would do an angiogram if I want, but he doesn’t see a need for such an invasive test (camera up the groin to the heart). He says he thinks the low heart rate is the medication, and he wants me observed here for 24 hours more to see. So that was very positive, and makes me feel like I overreacted by heading to the ER. Mrs. IM has pointed out that I waited for 2 days when having an actual heart attack, so I should overreact rather than the opposite.
But good news, all in all.