Why do you keep dreaming my dead husband?

This is no reason for concern. Different individuals process grief differently and always in their own individual time frame. You may be having dreams that you don't remember, or your dreams may present metaphors that your conscious mind does not recognize as related to your grief. Or you might not have vivid dreams of your late husband for several months or years. Your dreams are just right for you and should not be compared or measured by any other standard.