Ummm... in the tamagotchi video game ( tamagotchi corner shop ((their coming out with a seccond one!)) ) i think if you see the king alot his egg cracks. It said something like that in th instruction booklet:)
That was the matchmaker... You tama got married and now it has a baby. It doesnt float so it can take care of the baby. Nothing to worry about, this is normal