Q. 1. If my conscience is doubtful regarding a certain matter, what should I do?
A. 1. First of all, there is a need to explain the meaning of a "doubtful conscience." A conscience is in doubt when it cannot decide if a certain action is good and can be done or it is evil and should be avoided. When you are not sure of a certain action is good or evil, you must not do it until such time as you have determined if it is good or evil.
On the matter, the Catechism of the Catholic Church states:
"In the formation of conscience the Word of God is the light for our path, we must assimilate it in faith and prayer and put it into practice. We must also examine our conscience before the Lord's Cross. We are assisted by the gifts of the Holy Spirit, aided by the witness or advice of others and guided by the authoritative teaching of the Church." [C.C.C. # 1785]