24 hour Holter Monitor

I’m a healthy, active 28 year old and 15 weeks pregnant. This is my second pregnancy and I feel blessed this time around to have no morning sickness or really any pregnancy related symptoms yet.

The only thing I’ve experienced the past two weeks is a high heart rate with increased activity. I work on a busy critical care unit at a local hospital so my increased activity is also at work as well as at home with an active 22 month old. I check my heart rate when I’m feeling short of breath and feeling palpitations and I’ve noticed it as high as 140 when I’m usually in the 60s and 70bpm. My OB sent me to the ER yesterday and they put me on a Holter monitor. Has anyone had these palpitations and been placed on a monitor? If so, where they able to tell you anything?