Hello there, you did the right thing in reaching out.
Contemporary views of alternate sexuality are held with a terribly negative stigma attached to them, most of those attached to religion.
No. There is nothing wrong with bisexuality. I am bisexual, and it was a hard time cutting the people out of my life who didn't support me. It is not "unnatural" or "immoral", it is who you are, and you need to make friends with people who support you.
Don't let anyone beat you down, do not be afraid to develop who you are, and do not let anyone make you afraid or ashamed to live your life.
Please keep in contact and let us know how things progress. Never forget that you matter, and you are not alone.