23 yr girl wants to fuck/impregnate a lot of girls/milfs? normal & bi?

I'm not sure if I identify as Bisexual. I find women more attractive but I can't see myself in a relationship with women. I very much like being in a relationship with a man. But some times I feel like a man in a woman's body. When I see an attractive milf or innocent looking attractive female, I fantasize having sex with them as a lesbian. I also try to imagine what it would feel like to have a penis and feel the inside of these woman, cum inside of them, and impregnate them. It makes me feel like a horny guy who just goes to bars to hook up. :( I think it'd be perfect to have a vagina but also have a detachable dick that has all the nerves as a real dick. I used to imagine being with men but I am mostly attracted to women now. I have a bf btw.

Is this normal at all? It might just be fantasies.