Great to hear from you again. Don't worry, your post makes perfect sense. Sorry you are having other issues. I personally have not had low heart rate. But I am not surprised though. I have found that many odds things happen to our bodies after a stroke. I do know that while our brains are re-wiring around the dead spot in our brain and sometimes they "misfire". May send a message to the wrong place. That is why some days we may feel absolutely normal and the next day feel like crap.
If I remember correctly, you are still young in your stroke recovery. The first few months after a stroke are crucial for you to rest when your body tells you to. In my opinion, trying to walk 2 miles right after your stroke may be putting to much stress on your body and brain. I know we all want to "get back to normal" as soon as we can, but we have to work with our stroke not against it. To work with stroke - you must listen to what your brain is telling you. When it tells you that you are tired, then rest, sleep, or take a nap. Many of us sleep at odd times of the day after a stroke. Don't fight it. Understand that your brain is altered from the stroke and you have to get used to the "new you".
I sure hope that this is not anything too serious for you my friend. Do you remember Janet (writeleft) from this board? I am pretty sure that she has had problems with low heart rate. I know that she is busy right now with personal matters, but when I talk to her again, I will make sure and mention this to her and I know she will have more knowledge about this situation than I do. But I will close with this one thing that I tell every stroke survivor. Drink as much water as you can and rest whenever you are tired. These little things are important and seemed to help me recover quicker. Try not to worry, o.k.? You have friends here that care about you and only want the best for you.