Since I started CPAP therapy I have not been able to remember my dreams... If I'm having them.
But when I could remember my dreams my gender was not always the same from one dream to another.
In some I was male, usually in nightmares, in some I was female, usually good dreams, and in others I was genderless, able to change gender or both at the same time.
One of my most vivid dreams I had during a particularly bad case of flu when I was running a 40℃ fever, and no the prescription was not more cowbell, but I don't think it counts.