Do you have a fever? A rapid heart rate over 100 at rest is a medically significant symptom and could be an indication of serious cardiovascular condition.
There could be blocked arteries in your legs, called peripheral artery disease that may be causing your leg pain. “If you can walk through the pain and it gets better as you go, it’s rheumatoid arthritis,” says Michael R. Jaff, an osteopathic physician and medical director of the vascular diagnostic laboratory at Massachusetts General Hospital in Boston. “With PAD, the more you walk, the worse the pain gets,” he says.
Hope this helps, and if you have any followup questions, you are welcome to respond. Take care.