When I lost track of how many weeks I'd had a bump on my lip, and also lost track of how long it had been since I nicked it while shaving, I decided to have it looked at. Then I lost track of how many weeks I remembered it only when I couldn't call.
After making the appointment, I reflected that the bump might change before I saw you and photographed it. All three pictures are links to much larger pictures.
Picture taken 22 February 2018:
On the twenty-fourth, I wiped the bump off while blowing my nose, and immediately took another picture. There was a red ring around the spot which does not show up well in the photograph:
On the third of March, I thought it was entirely gone and took another picture, but when I look closely at the blow-up I can see a small circular depression.