Was lurking so Im going to poke my nose in
You can have a seperate policy from your DH if its going to be in your name and not thru him.. like getting it thru your own work. You cant be under his policy and have different plans thou like he has an HMO and you want PPO. Entire family would need to be under same plan on one policy.
You can have 2 policy's as well but whomevers birth month is first would be the primary policy. And it dosent go by year or age just by birth month.