Yes! If you live together he can’t file Head of Household. You might need to amend the whole return. If you lived apart the last 6 Months of the year and he claims a child he might qualify for Head of Household but your income shouldn’t be on it. And you would need to file your own return as MFS or Head of Household if you also have a child. And he can’t claim you as a dependent. Oh what state are you in? There are several Community Property states that have special rules when you file Married filing Separate.
