I ran in to this situation as well.  If your siblings do have CAH, and you do not, there is a high chance you are a carrier.  However, it is very rare that your husband would be a carrier as well.  In order for your child to inherit the gene you both must carry it.  If both parents are a carrier there is a 1 in 4 chance your child will have CAH.  Which happened in your parents case.

Anyone else reading this please correct me if I am wrong.

Allison