Strange issue a year later

My left arm had been doing great.

In the last week both arms kicked into high gear.. including my left arm which has been on the rise for a year, now tingling is back.. bad sensations. pin prickles that pulse with my heartbeat at times. Also other areas are acting up too (legs) which leads me to wonder if something else isn't going on here to make my nerves (all of them) more sensitive... but the left operated arm feels worse than my other arm today for literally the first time since this all happened. I did a long drive recently.. but Im pretty sure I've done that before so this doesn't make sense. I have a blood test scheduled to see if there isn't something else going on (btw.. I had an emg recently that showed my operated left arm to be basically back to normal) so this is all weird.