Hi Sandi, I have had that problem too prior meds my pulse rate would never be below 120 if I remember correctly and then I had problems it shoots up. There is actually a name for it and there is a thread here regarding that. I have had it since I can remember, my doctor (finally) said in time that can do damage to a heart and put me on a beta blocker, I pay $4 a month for that and take a low dose. My blood pressure has always been good, a little on the low side now but that is due to the beta blocker.
Since been on that I haven't really had any problems, praise God.