Please don't hate yourself for wanting a mother...I think that's quite understandable.
With respect, and I hope this isn't taken the wrong way, I think that your desire for a dominant woman is you trying in a way to fill the void left by your own mother, an I think you recognize that. The only thing you can really do there is to seek a therapist. That, I think, is the best way to handle things.
I don't think it's strange, or necessarily unhealthy unless if affects your marriage. Have you spoken to your husband about this, by chance?