My kitten,Cleo, who is still on the rather small side went into her first heat yesterday. She is acting normally except for tail moving to the side and she was hiding under my couch so I put her in my bedroom with food and water. She hasn't been outside or around my other cats except for my females. She just wants to be alone. but is it normal for her to have bright pink nipples? She's a naturally plump kitten but there's been no discharge or any chance she could be pregnant. I've never had a kitten this young go into heat. My vet won't fix her yet becuz of her small size and her age. she's def in heat but it's silent heat.