Hi @KathSeward
Creepy crawly is a good way to describe those weird sensations. I think chemo attacks the weakest links and, for me, old injuries (and I've had a few) get a life of their own. We are sort of told this stuff will happen but it's hard to figure out what is significant enough to warrant action.
Changes in drugs take a while to get used to,--one set of side effects tapers off and another arrives.
Do you have your oncs email address? The poor man who is looking after me gets regular 'updates' when something changes enough to rattle me. It's worked well, he'll call me in if something rings a bell for him and sends me a 'Dont worry, we'll talk about that later' response if my concerns sound routine.