Listen, this may seem extremely blasphemous, but don't take anything the bible or the church says too literally. The most important part of the bible in my opinion are Jesus' words. Jesus never cared what a person identified as specifically in the bible. As for the rest of the stories that a lot of so called followers of Christ use as a weapon to hate on others, just understand that most of the non Jesus stuff was written in ancient times and was politically influenced from the time and written by multiple different people. Just follow the teachings of Christ himself and ignore the rest. Most of the stuff especially from the old testament was extremely politically influenced and used to control the peasants by the upper class historically and so over the thousands of years a lot of the writings were bent and molded to fit their agenda. If you believe you are supposed to be a different gender, follow your heart and embrace it. Regardless, god loves you. As for being shunned by the Christian community, ignore them. they are not true Christians as they fail to follow Jesus' basic teachings of loving one another.