It is normal to have questions about the gospel and even to experience doubt. Pondering your unanswered questions can often be healthy if it motivates you to sincerely seek greater knowledge and truth. In addition, such questions are often part of “the trial of [our] faith” that is required before we receive a witness from God (Ether 12:6). However, doubt is a dreary destination, so it should never be a goal in itself.
Remember, God is merciful, and if you maintain hope and a desire to know the truth, He will reward you with the answers you seek or at least with the peace and reassurance you need in order to continue in faith (see Matthew 7:7; 2 Nephi 32:3; Alma 32:21–22; Moroni 10:5; D&C 6:36).