just because you have some masculine features or tendancies doesn't mean you were male in a past life. It is as the rest say here, sex, sexual orientation, and race, and species remain the same throughout lifetimes for ever living being, as these aspects of us each have their own energetic frequency that just don't change you are who you are and your body is the manifestation of your soul. The masculine traits you may have could be due to planetary placements and aspects. You could also possibly have the majority of your planets in the top hemisphere of your chart. You are reguardless still a woman and represent the feminine physically and all that nurtures, and is beautiful.