While early sobriety does cause increased heart rate (which is exactly what anxiety feels like) it can be mitigated.
That's why we keep saying "go to the doctor" - because then you would have a medical tool to keep heart rate normal for those first few days until your body stabilizes.
Just be careful, OJ.
The bad thing is that I could talk myself back into drinking with the kind of thinking you are doing right now - anxiety is uncomfortable, but it passes. At some point, you have to be just done and learn to self-soothe.