Kitten got spayed, infected?

My cat got spayed on Tuesday (July 21) it is now Friday (24) this is what her belly looks like now. She doesn't seem to be in pain, she's completely normal. Eating, using the bathroom, playing. It spreads more each day. If it is infected we plan to take her to the vet but we just need someone else's opinion. Please help

Give your vet a call, some vets will do a free follow up appointment after spaying.

Definitely call your vet and let them know what is going on.  Perhaps you could also see if there is a way to e-mail the photos to your vet.  If this were my cat I would take her in for a check-up.  One of my cats did get an infection in her spay incision after her stitches were removed.  The vet drained the infection and she was also put on antibiotic too.  My vet also told me to put warm compresses on her to encourage the area to continue to drain out.  My cat hated water but would lounge on a heating pad so I called the vet and they told me the heating pad was fine.  Starbuck was acting completely normal when she had this infection so please follow-up with your vet.