Wow, Kitti, how totally introspective on your H's part... maybe you could validate this and ASK HIM what the two of you could do to make him feel like it is NOT nasty or dirty, as well as how you could get back to it being wonderful and loving, not dirty and trouble making... Maybe you should have this convo together in the shower... or wherever!
Relax. Appreciate. Be calm. Laugh. Enjoy. Be secure. Be loving. Be loved. Don't personalize. Don't ASSume. Accept. Be grateful.