I've been male, female and androgynous/unknown in my dreams..
All the dreams i had of being specifically female were more like nightmares though.. one dream i had i was pregnant, i woke up and felt depressed for days after... another i had (warning this is really sick), i was paralyzed and muted, completely stripped down, being raped by a woman with a dildo, in the lady parts .. sadly the only sexual dream involving "myself".. wtf...??
then ive had dreams where i was male, going places, peeing while standing, many jerking off.. and they felt so real..
the rest of my dreams i remember are almost always bizarre, and the sky is always black..