I am about to order the Medi-Fit Pro version - I believe this is the recc for us in the UK?? I have been experiencing intense dysautonomia like symptoms; tacycardia, dizziness, numbness, weird pains and zaps, etc. I saw a post fro Sterling about a lady who used US for POTS on her sacrum.. is this where I should start, or the standard spot for vagus nerve below the ear? Any helps, tips, advice all greatly appreciated!