I got pins and needles in my feet from chemo and it took the best part of a year for them to go completely away. I also used to get numbness on my hip in the surgety side in bed if I was lying on that side but now that I'm writing about it I realise I haven't had that for a while. Not quite the same as you but all the pins and needles did fade eventually. If you are very anxious, ring your surgeon and/or oncologist. Put your mind at rest.
I have had numbness and pins and needles in the surgery side. I also getting it when driving when my hand is in one position. I put it down to removal of lymph nodes. I don't know how common this is but it's another side effect we have to contend with. Fortunately it is getting better with time so hopefully it will with you. Keep smiling.