Hi! I'm going to guess that your tama is a boy because male and female tamagotchi's can't mate. Well, I know for a fact that when your tama gets to a certain age, the matchmaker comes and asks if you want to find love. Your tama seems too young for that yet, so I'm thinking that it's just a gltich. You can just reset your tamagotchi and it should be back to normal. But wait! One question for you; Is there an adult with the baby or did the baby replace the adult? Thanks. Hope I helped.
~Merry Christmas~
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~Happy Kwanza~
~Happy New Year~
~~~Tama Mama~~~