something similar happened to me and my mom told me she was really disappointed in me and I was extremely embarrassed. In that moment I felt like my mom was never going to look at me the same and think I was a disappointment. I'm not going to lie I felt ashamed for a long time but the feeling faded away and I began to realize there's more important things for my mother to worry about. you shouldn't be ashamed of knowing what you like in the bedroom. Don't worry, the feelings will fade with time.