Hello, I am a 27 year old, pregnant with my 3rd child. I am 25 weeks pregnant and today my heart rate is near a hundred beats per minute after being normal up until now. I have been laying down and resting and it will not come down. I feel drained and tired. I've eaten a bowl of cereal for breakfast and tacos for lunch. Should I go to an emergency room or is this normal? Is there anything I can do at home to help bring it down?