Anxiety

Does anyone have any advice for dealing with anxiety about taking blood pressure readings? All day I've been measuring my heart rate and stress on my smart watch and it's been low-normal most of the day. As soon as I mentally prepare myself that I need to go measure my blood pressure right now it spikes and as I'm taking it I can feel my heart race. I just worry that this is really affecting my numbers and I'll never get an accurate reading.

My doctor has already prescribed me new meds and now says I have to measure every day and write it down, send it to her and if I have even one reading above 120/80 she'll have to reevaluate my treatment. For some background info, I'm 29 f and my current bmi is 32.3 (I know I have to work on that a bit) and I have a family history of hypertension. I'm not saying that my blood pressure probably isn't elevated because of this but I think my anxiety is making it worse. At the doctor's office I'm even more anxious about just being in the office but even at home I get anxious about taking my readings. Just the overthinking that the numbers will be high and then the tightening of the cuff just makes it worse. I have anxiety on a situational basis so my overall anxiety isn't exactly a constant thing just in certain situations. Any advice would be greatly appreciated.