Thought I would ask this since the vets are now shut so I won't be able to sort out an appointment until tomorrow morning.

I picked the cat up this evening (which I do quite often) and she let out a bit of squeal. I could feel a little lump in the space inbetween her ribcage and her stomach. It definitely wasn't there yesterday, it's squishy, although she obviously she doesn't like me touching it. She seems completely normal, she's not been sick, she's been to the loo and she ate all her tea.

It sounds like a hernia although it seems a little too far up.

Any cat people fancy a diagnosis?