Heart rate high and low blood pressure

Hi ladies, hope someone can help me or share similar experience. I am 4 weeks and 3 days pregnant and having consistently high heart rate since last Saturday. It is always between 95-105 bpm. I was breathing heavily at work and got my bloodpressure checked at work today (I work at a Radiology clinic) and blood pressure was very low and had it checked 3 times and it was low every time with high heart rate. I don’t feel dizzy etc but very very tired and breathing heavily. Doc’s appointment is not until Wednesday and just want to know (from your experiences) if this is normal when you are pregnant? I’ve never had anything like this before.