My DH is not happy for me to use it
Good lord! Why are men like this? FS. Whenever I feel like a barren old spinster, I read something like this and feel - well, relief.
But to answer your question instead of being rude sensible about your DH - I'm a Professor & have a personal title as well.
But I also have a PhD. The PhD is the title I have earned - it is mine. It is not dependent on my job, or my birth.
When I retire, if I'm made Emerita, I can still use that title, but as I rarely use it while I'm working now (and haven't really used it much in the 15 years I've been a Prof). To me, my title 'Professor' is my job description.
I will go to the grave as Doctor (and a proper one, not just an undergrad MB BS). If I'm asked my title, I say 'Dr'.
Your DH is wrong ,ad just how nasty & passive-aggressive is he over other stuff?