Since getting my covid booster my resting heart rate has gone from 86 beats to around 110 the day after. i'm having some mild internal heating and dry throat from the vaccine. is this normal??

All vaccines can cause varying symptoms. yours seem to be consistent with those. But if they do not normalize in a day or two see your MD

Would suggest seeking medical attention as other conditions, such as a throat infection for example among many others cannot be ruled out just because you had the vaccine.

Side effects from the vaccine generally resolve after a week. If your rapid heart rate and hot feelings persist longer than that a medical investigation including EKG & thyroid testing is warranted.

Those are common symptoms within the first three days after COVID-19 vaccination. I would suggest simple treatments like rest, ice, fluid/electrolyte hydration, acetaminophen, and/or ibuprofen until day 4 after unless it gets worse. If worse or still there after day 4, see your physicians.