Retta18

The center doesn't look reasonably flat. Almost like a tiny crater, which would be similar on an infection if it was red/swollen. 
It can still look normal, later on. It often takes 4-6 weeks before you know what you're ending up with. 

Yeah, it doesn't look 100% normal, but it also doesn't look red/hot either. If it does get red and hot then it's infected and you should see a doctor immediately. Otherwise all you can do is wait 4-6 weeks to see how it comes out. 

looks infected...

Poor application or damage during healing, as far as I know . . .