Peace be on the followers of guidance,
All praise be to Allah.
If you are not Muslim, and you are married to a Muslim man, then what I advise you is to learn about Islam, and earnestly search for the truth, and open your heart to the religion of truth.
It may be a blessing from God that He married you to a Muslim, a noble follower of truth, as revealed by God, so that God could show you the path to success in the afterlife.
Islam is the religion taught by Abraham, Moses, Jesus, and Muhammad, peace be upon them.
Its main belief is that Allah (God) is One, and we devote all our worship to Him alone. Allah is Just, Merciful, Loving, Wise, and Perfect.
We follow Prophet Muhammad, pbuh, since his teaching has reached us in its pure authentic form, and since he is the final messenger, his message abrogates the previous scriptures and teachings. There is no Prophet after him.
If, however, you do not choose to embrace Islam, then be aware that you must respect your husband's religion, and not interfere with his practice of his faith. You should not influence him to follow your religion or religious holidays.
You must also be prepared to raise your children as Muslims, and it is not permissible to teach them Christianity. In order to do this, you will have to learn about Islam yourself.
Finally, there may be certain practices in your religion, such as drinking alcohol, eating pork, or displaying religious icons, that will cause harm to your husband, and you should avoid them. In case of any conflicts, you should refer to an Imam, or Islamic scholar, to work out your differences.
I do hope and pray that you will learn about Islam, and that Allah guides your heart to embrace Islam and become our sister in faith. Ameen. Please do not hesitate to ask any more questions that you may have.
And Allah knows best.