Is it normal i vision myself doing this?

Well I get aroused by women in porn and in my thoughts, but no one else knows. I do have a boyfriend so I carry my role very well. I'm 20 years old and have a lot of goals and dreams for myself. I love looking at women on porn. I have my days where ill masturbate to a picture or video of a woman naked and envision myself as a male version of me fucking her or her sucking my imaginary penis. It turns me on so much. Or ill just envision me eating a girl out as me myself a woman. Sometimes I wish I was a guy for a day just to see what it is like to be inside a womans vagina walls. Fucking a woman seems so fun. I just want to know is it normal for me to envision myself as a male version of me fucking the shit out of a women.