They committed zina, then they repented and got married, but she is sure that they will be punished and their children will be deformed

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He committed zina before he became Muslim, and had a son; can the child be attributed to him and how should he take care of him?
She committed zina before her wedding and got pregnant, then had a miscarriage. Is her marriage valid?

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He committed zina before he became Muslim, and had a son; can the child be attributed to him and how should he take care of him?
She committed zina before her wedding and got pregnant, then had a miscarriage. Is her marriage valid?

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