Thank you all so much!
Radiology was wonderful. Straight after the consult and treatment I went across the road for an ultrasound to check for clots to rule them out before looking into the swelling further. They didn't find any (thank goodness!) and I was told it was likely still a side-effect from chemotherapy, despite ending over a month ago and previously told previously it would "all be well out of [my] system by now" and that I could actually expect at least another two weeks of side-effects. I will keep track of it and if the pain and swelling continue to advance I will ask about edema and push for a specialist.
The clicking in my joints and back pain were "wear and tear" but because the back pain has been so present for so long I will be going in for a bone scan tomorrow because she's concerned about density and other issues.
She also offered to prescribe Ativan for my night nausea and stop me worrying about everything so I'll actually get some rest, but I remembered I already had some left over in the cabinet :lol: Now I know to take it.
Amazing how different that response was to my being a poor thing.