Small scrape? I think? On Chinchilla

I've had Oakland for a week and when I went to check on him today and get ready to clean his cage I noticed his fur looked strange, upon further inspection I found some blood on his fur, I thought the cat got a paw into his cage (I don't think this is so as I keep his cage covered and the cat wasn't near him all last night). It doesn't look like a cut more of a scrape (definitely not a puncture or bit wound) There wasn't much bleeding and I followed the first aid guide on this forum (saline water and fur trimming). The scrape doesn't look too bad and he is acting normal. Should I be worried? Should I go to the vet first thing tomorrow?