I trimmed my cat's claws yesterday for the first time, and today I notice that one of them is black- is it possible that I trimmed to close and this is some sort of a scab? Or could it be some kind of fungus? Or another issue that I'm not aware of? We just got him from a neighbor and have yet to take him to a vet for a checkup and any testing, and I'm very concerned. All of his claws looked perfectly fine yesterday when I clipped them, so I'm sure this something new since then- wasn't like this when we got him.

Please give me some advice, I never had a cat before and all of the vet offices are closed until tomorrow because of the holiday. I wasn't planning on taking him to the vet for a check up until the beginning of June when I get paid, but do you think it's necessary that I get him in there sooner? He doesn't seem to be in any pain- is acting like himself, very playful, and lets me touch the claw without seeming like it irritates him or anything...

Thanks for your help.