6 weeks after spaying - blob on incision site?

[OiledBegg]

The incision of my cat's spaying had all healed nicely and I never noticed any issues. Her fur has nearly grown back completely. I was stroking her last night and felt a small bump on her skin where the incision was. I parted the fur and it looks a bit like a blob of dead, white skin as its flaking slightly. I pushed it slightly and it's attached tightly to the skin underneath to what looks like an old wound. She didn't mind at all at me touching it and haven't noticed her licking/pulling at it. Any ideas what this could be? It's not red or weepy at all.

[Fluffycloudland77]

I'd ring the vets, it's always worth checking.

[Wolfiefan]

Did she have a check up after spaying?

[OiledBegg]

I'm not sure if she did, she was spayed whilst at a sanctuary and I collected her two weeks after.