If you are attracted to females and wish to be a female, you are indeed lesbian :3
I also consider myself a lesbian, though I am straight as of now because I am still a legal male, due to preferring females and I have a girlfriend already who is a bisexual male to female transgender.
What is the point of beating yourself up for being who you are anyway?
So what if you are attracted to females and wish to change your gender/sex, that is normal although society does not see it that way.
If anything, on the homosexual topic, I have always thought people (as in everyone on this planet) were initially bisexual at one point in time in their life either clueless about it or in denial and I myself have found some male content arousing before a long time ago.
A long time ago I was quite confused about my sexual preference to men because I had thoughts of them sexually and I knew I just did not like them like that, but since I was thinking about them on auto-pilot every now and then I thought I was bisexual but something was WAY off, I was not looking at males intentionally and did not find them arousing.
Years went by and I was still stumped on why I kept thinking of males, then one day I stumbled upon ->-bleeped-<-s (transsexuals) and my images of men stopped auto-piloting and I realized it wasn't men I was attracted to but transsexuals and I have not had a single auto-pilot image of a man in my head since :3
It explains why I was never attracted to men but I did not know much about transsexuals back then and was battling my preferences and I always looked at furry art and feminine guys (emo's) and it just occurred to me that I prefer feminine transsexuals over men and I also realized in turn I am also lesbian.
You just need to find yourself, your place, desires, sexual orientation and be you :3
Explore yourself, your soul, body, desires and everything about you and you will find your place.
I am a male to female lesbian, but I do not want to be with a male... it just does not fit my image.
But I am also taken by a dominant male to female transgender :3