Idk about you, but for me, I find that my dreams are almost ALWAYS about what I was thinking about earlier that day (or something I was thinking about in the past few days.)
So for example, a few days ago my friends' mom called me looking for him. and I missed her call. and I kept wondering if it was something important. the next night I had a dream that my friends' mom called me and she was crying and telling me to save her son. and I was like "I'm on it!" Then I woke up and was worried about my friend, but he was fine, lol.
That's a more light example. sometimes I have some really messed up dreams. but I can tell that they are just a mish mash of things, events, or thoughts that I had earlier that day. So I often do have dreams of being a female, because I often think about my body during the day or my past, like when I see pictures of myself from before, or when relatives call me "she" and I end up having dreams where everyone calls me "she" and I wake up and wonder why I didn't get pissed off at those in my dream.
I try to take my dreams with a grain of salt.