As a follow-up to https://www.pacemakerclub.com/message/33858 (pacemaker moved 12 days post-implementation) I went to the hospital today and saw first the specialist arrhythmia nurse and then the senior EP consultant in the arrhythmia team. They both agreed the pacemaker had moved -- even if they couldn't actually find it -- it was placed under the muscle and has shifted up and sideways to pinch nerves but is still so well-padded they can only estimate an approximate position.
Because of the neve problems and the uncertainty, they want to reposition it (although they don't usually do that if they can avoid it) and I'm waiting for a phone call with an appointment for early next week. If they can get it done on Monday or Tuesday, they're happy not to move my AV ablation appointment (Late October)
I'm looking on it as another adventure... or trying to. At least it should only take half an hour (they said...)