scars

I bought a kitten. I now believe from someone who I shouldn't. I noticed scars on the way home but hadn't noticed them in the house. Some were round so assumed ring worm scars and started asking some questions. Vet doesn't have a clue what they are and I'm now led to believe by a few breeders...

... After spaying? And can you show me pics? Is it bad? :-/ Im going a bit crazy, since now my babies are 5 months old and soon they are not my babies anymore but hormone driven teenagers ;-( Im afraid they are getting ill after the surgery... Take my fears, take them now and take these pics!!!