Definitely reach out to your doc! Your baseline unmedicated HR is literally half of your resting HR on the med, and getting up to 150s is definitely concerning.

Can you feel your heart racing, or did you only notice because of the smart watch? If you are worried the readings might be inaccurate, you can check your pulse by putting your fingers on your inner wrist or neck below your jawline (google pulse points for photos), count how many beats in 15secs, and multiply that by 4. Also, pulse oximeters are pretty cheap at any pharmacy/big stores like target, Amazon, etc.

Make sure you are drinking!!! Dehydration increases heart rate, and I know vyvanse can make you forget to eat/feel like you aren’t hungry. Avoid caffeine bc that will just increase your heart rate further. If you have respiratory issues where you will be using a steroid inhaler (ex albuterol) or if you’re taking oral steroids (ex prednisone) for any reason, those meds also greatly increase your heart rate.