I am thinking about the post surgical infection you are talking about but the photo is not clearly visible. I would like to advice you as follows:
Post surgical infection can only be as a result of contamination after surgery and this is least possible since the surgeon most likely took care of that.
From what I can see these seems to be a mild case of hyperemia a condition characterized by reddening and swelling of the skin due to trauma during surgery
The actual infection has to show some signs like ulceration and production of pus or discharge. I would be interested to know if you have observed this.
I will also appreciate to see up close photos for me to give more precise advice.
I hope this helps