Your resting heart rate is normal. The resting heart rate is the number of times in a minute that an artery pulsates, indicating that a heartbeat has occurred. The normal resting heart rate for adults over the age of 10 years, including older adults, is between 60 and100 beats per minute (bpm).
But your symptoms may be caused by anemia, hypotension, hypoglycemia, etc. You can check your blood pressure and blood sugar. If you still have obvious dizziness and shortness of breath, you need to go to the emergency room for treatment.