Some peoples bodies or skin does swell slightly after surgery which is normal.
Not everyone who has surgery will experience swelling but in some parts of the body there may be noticeable swelling after the surgery which is normal.
The swelling should go away within a few days or so.
I once had abdominal surgery and my abdomen was swollen for a few days afterwards.
The doctor said it was normal although I though I had an infection.
The swelling did go away within a few days.
Also some parts of the skin may swell after the incision is sewed shut and that is normal as well because your bodies natural response to injury is swelling to help heal the injury.
Severe swelling or swelling that does not go away within a few days to a week of surgery could be bad though and you should let a doctor know about it.
Some surgery incisions heal within 1 to 3 weeks and some surgery incisions take between 6 to 8 weeks to fully heal.
The size of the surgery incision will factor into the actual time it takes for the surgery incision to heal after surgery.
Smaller incisions heal within 1 to 3 weeks and sometimes 4 weeks.
Larger surgery incisions take between 6 to 8 weeks to fully heal.
You may still have a scar for a few years after the surgery incision and sometimes you may have the surgery incision scar for the rest of your life.
The last time I had a surgery incision which was for appendix removal the surgery incision healed within 3 weeks of the surgery.
The doctors told me to take it easy for around 4 weeks to allow the incision to heal.