You’re young and scruples often inflict the young most of all. We live in confusing times. It’s not like you’re doubting the Holy Trinity or something. As another person said, the fact that you’re worried about being in schism indicates that you are not in formal schism even if in material error. You need to find a good Confessor who can shake you out of your scruples like one did for me. In any case, scruples can be rooted in pride, and it also speaks to a lack of trust in God’s Mercy. God is Love. Just put yourself in His Hands, ask Him to help you find the truth and not offend Him, and all is well.