The only way to actually know what blood type your husband is would be to have it typed. The only thing we know for sure is that you and your husband each carry a gene for the O blood type, which is recessive. You likely carry one gene for B and one for O (B is dominant so your blood type is B). Your husband could be AO (A blood type), BO (B blood type), or OO (O blood type). Your daughter would have inherited one O allele from each of you, resulting in her double-recessive blood type. If your husband would like to know his blood type, he should have it typed, as it is impossible to know from your children's profiles.