question: Hello doctor, I am a relatively healthy 68-year-old female who has been having episodes of tachycardia while at rest. This started three months ago. I also have dizziness while reclining mostly at night. I do have medicated high blood pressure, osteoporosis, and GERD. I do seem to tire easier also. I play tennis three days a week and walk over 10,000 steps every day. My watch indicated 12 times I have had tachycardia. Should I go to a cardiologist about this?