2Vermont, just because your husband suddenly has a conviction, doesn't automatically give you a conscience problem. Ultimately, you need to follow your own conscience. The Church teaches that conscience is an ordinance of reason, so you can't say, "What if my husband is right, then I might be sinning". That is an unreasonable, hypothetical fear. Perhaps you can ask your husband to give his reasons, and if you find them reasonable, you can have the same conscience.
To have doubt, you need at least one good positive reason to doubt. You cannot merely base it on "what if" (which is hypothetical).
There are solid principles of reason the Church gives us: The Church says that "a doubtful pope is no pope", "a doubtful sacrament is no sacrament", and that "a doubtful priest is no priest". These don't mean necessarily that they are not real, but that for PRACTICAL purposes you are free and obliged before God to consider them invalid because of the doubt.
If one has no doubt about a pope being valid, one must believe the Novus Ordo and priesthood are valid and good, and act upon it.
I, personally, doubt the Novus Ordo and their priesthood, and will have nothing to do with them....as well I reject the papal claimants who promote Vatican II and ecumenism.