Thank you for the reply I'm actually sat up hoping she will come home soon. I have never heard of that before but looking at the symptoms I don't think it is that. She isn't especially interested in food at the moment, she is hungry when she comes back but just eats normally when she is around. Her general health is good, she just looks worn out and a bit ragged from roughing it outside. I'm convinced it's to do with her and this male cat having sex, because she was exactly the same last year when he was around. Thank you for suggesting it though. I'd never heard of that before. I think she is just a bit confused, she has had a phantom pregnancy before and she was quite peculiar then too.