I was wondering if anyone else has experienced this.

I am at work today( cashier at gas station so mainly standing). Since about 2pm my heart rate (per my Apple Watch) has averaged about 110-115 bpm. Sometimes higher (as high as 128) sometimes lower. It is hot in here about 78-80 degrees all day. I have tried to sit down when I can and in front t of the fan to cool off.

Normally w/o being pregnant I average 65-75. And over the last week that has changed to 76-95 on average except for today.

No other symptoms really. I have felt a little shaky at times but that has gone away if I ate.

Is this normal?