I have chronic tachycardia and during normal daily activity it's common for it to hover around 90-100. During exercise it easily goes over 100. I've also gotten

I have chronic tachycardia and during normal daily activity it's common for it to hover around 90-100. During exercise it easily goes over 100. I've also gotten it checked. They had me wear an EKG device for a few days and did a blood test for thyroid issues, but other than "Yup, it's very fast", they didn't really get much more revealing information. I figure so as long as it doesn't cause me discomfort I'll try not to worry about it too much.