This is a question that you really want to address to your pastor. We want to recognize that life is a gift from God (Psalm 139:13-14) and that he alone (Psalm 31:15; 90:3)—or his representatives in the government (Romans 13:4)—has the right to end a person’s life. Since God forbids the illicit taking of human life (Exodus 20:13), we do not want to do anything that has the specific purpose of shortening life.
Christian Life Resources, a WELS-affiliated ministry, has numerous resources that can be helpful for you and your pastor.
Again, do contact your pastor and share with him your questions and concerns. God bless you.