After Surgery for stage 2b melanoma. Worried about some symptoms I'm having although GP doesn't seem overly concerned

Hi

I was diagnosed with melanoma stage 2b. A week ago I had a wider local excision and sentinel lymph node biopsy. Almost everyday ive felt sick I don't seem to have a temperature but I have had the shivers my GP doesn't seem overly concerned. I have alot of swelling and pain in the ground im presuming this is normal?. Any advice would be gratefully received.

Thankyou in advance.

Emma.