I am a Protestant Christian, and I stand with my Mormon brothers and sisters in Christ.
No, you are either a Mormon or an infidel posing as a Christian. Let's experiment to see if I am right:
1) Do you believe in the Trinity?
2) Does it bother you that Joseph Smith had something like 20 wives, and publicly lied, claiming he only had one?
3) Do you believe salvation is through arcane temple rituals and obedience to the Mormon high command?
Let's see how you do.