My dogs spaying incision is not closing.

My 10mt old pup was spayed on 10-7. Her incision is still not closing over and she is scheduled to have the sutures out on 10-19. I had her back to the vet on 10-11 because it had become infected ( they didn't give her any antibiotics after the surgery) but they didn't seem concerned at all. They just simply gave her some antbiotics and sent her home. I don't know what to do the vet doesn't seem concerned but I think it should be closing by now. Am I wrong?  Am I just being paranoid?

[opus88]

This is the Cat forum, but still an animal issue so I can try to answer your question.
IMO you do have a right to be concerned yes....she started the antibiotic 4 days ago if I understand correctly, and in 4 days you should see some healing by now.....does she have redness or oozing at the incision site yet?...........if NOT than thats good and perhaps the incision itself will take a bit longer to close over....however IMO if you do see redness or oozing of any sort than I would take her back to see a Vet by tomorrow, this should be better after 4 days of an anitib.
All the best of luck with puppy♥