i will go and get a appointment with my gp

i just need hrt to to feminize my shape and start breast growth. i have been trying to find information about what the mental affects of hrt will be on me. am worried that after i start hrt my personality will change and people will disregard me for not being the the person they know.
i don't cross-dress i just need to feminize my body. if i went to see a therapist and say that i don't cross dress i just need my body putting right will he take me seriously ? i have got pierced ears and am growing my hair out to look more fem but am 6.7" and with the best intention in the word i will always look like a bloke in a dress. i just need to put my body right so i can feel good about myself.
Thanks X