No, I didn't.
It turned out Cora was just being a little tart - she fancied my boyfriend!
Cora is a CPL rescue cat, and they were pretty certain she'd been done, but the vet nurse told me she has a spayed female
who sometimes acts like she's on heat, sticking her tail in the air and doing that crouching down thing they do.
The problem is they don't always call when the come in season, I was a bit slow to get one of mine seen to, and she just went out
one night and came home pregnant.