I had a cardiac ablation procedure done on April 11th of this year. Over all thing seem to have gone well. My concern is that over the last few days I have been noticing many episodes of dizziness/lightheaded, blurred vision, headaches (towards the back of my head) and chest tightness. The strange thing is that some of the time my heart rate will go up to 100 bpm at rest which I know is not too fast but faster than normal. Other times I am finding that my heart rate drop to around 36bpm. Should I be concerned?

It does sound like a matter to be concerned about. Contact your cardiologist.

You better see your doctor now. Prevention is better than cure. It is not normal anymore.