I have been having crazy high heart rates and feeling like i was having the anatomical response of a panic attack (with no reason to be anxious) since the beginning of my second trimester. I went to the OB multiple times and one of the drs in the group finally send me to a cardiologist. I wore a holter for 48 hours and it showed I was having PACs. The dr said they aren't harmful to the baby and I just have to deal with it. I have still been having these "episodes" but never stopped to chef my blood pressure. At work this morning, I checked my blood pressure and pulse and got this: