Bad tempered mother cat

I need some advice. My cat had 4 kittens 12 weeks ago & has been a great mum. The first kitten left use 4 days ago & since then has become so aggressive towards the remaining 3 kitten,the other 2 cat & my son & myself. There has never been any problems between her & my other 2 cats until mow.She is due to be spayed in 2 weeks time just need advice on what's my best options for the next 2 weeks.

She may be in heat again, or perhaps she's developed a breast infection (sometimes happens during weaning) and is in pain. I would have the vet check her over.

Willowy said:

She may be in heat again, or perhaps she's developed a breast infection (sometimes happens during weaning) and is in pain. I would have the vet check her over.

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i have had her checked by the vet & health wise she's fine as I thought the same thing. The vet did say that some cats can act up when their kittens go but she's a lot more aggressive than normal. Didn't want her to have kittens but my sons ex assured us she'd been spayed already & believed her. Will just have to watch her closely for the next 2 weeks