You may file as Married Filing Separate.
You may qualify as Head of Household if you have a qualifying child and you lived apart from your spouse for at least the last half of the year and the child lived with you.
You did not tell us which state you live in. Most states, but not all, allow you to choose a different filing status than your federal.
Sounds like your husband could be Head of Household then.
New York MUST use the same filing status as your federal return UNLESS one spouse is a NY resident and the other is not (you fit the exception).
Nebraska has the same rule.
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