Increasingly slowing pulse

[Simplicio]

I have had high blood pressure (130/90-180/110)in which I just started taking pravastatin for, low pulse (35-55 Bpm), tightness/pressure in my head, weakness in my legs, lightheaded, dizzy, and my eyes have problems focusing and things go blurry. In fact when I was in the hospital 2 weeks ago (for these issues) my pulse never dropped below 50 and now it stays in the 35-47 Bpm range. I wake up dizzy every morning and these symptoms don't really go away. They stay with me all day.  What could be causing my pulse to keep dropping like that? The lowest so far (last night 4/29) was 35 bpm...I awoke and felt very dizzy. Also I am afraid to go to sleep cause I fear it will continue to drop and I'll die.
My cardiologist did a stress test, EKG, and cardiograph, and said they all looked fine with nothing to worry about. I don't know what to do and I am very worried about the tightness in my chest and dizziness and lowering pulse rate.

[Paderla Anitha, DNB]

Hi, bradycardia can occur with heart blocks and due to other causes like hypothyroidism. If your doctor has recorded the heart rate its unlikely that you are having bradycardia. Sometimes you may not be able to palpate the pulse well, in which case you may be recording a lowered pulse rate. Check with your doctor to rule out other causes of dizziness like inner ear disorders or postural hypotension. Regards.

[Simplicio]

I forgot to mention I am a 31 year old male, weight 178 lbs (I've lost weight from 185lbs since this all started about a month ago) and am not in the greatest of shape. I occasionally work out but not on any kind of constant basis and I am by no means a trained athlete.