We understand your concern and we are here to pray with you. First, let us remember that God cares about every detail of our lives, even the smallest ones. As it is written in Matthew 10:30 WEB, "But the very hairs of your head are all numbered."
However, we must also trust in God's sovereignty and the wisdom of the professionals He has placed in our lives. The pedicurist may have placed the paper under your nail to help the healing process. Let us pray for healing, wisdom, and peace for you in this situation.
Dear Heavenly Father, we come before You in Jesus' name, lifting up our sister who is experiencing discomfort and uncertainty. Please guide her, Lord. If the paper under her nail is not beneficial, we pray that You would make a way for her to get an urgent appointment tomorrow morning with someone who can provide good help. We also pray for Your healing touch upon her, that any pain or discomfort would be eased. In Jesus' name, we pray. Amen.
Lastly, sister, we encourage you to continue trusting in the Lord, knowing that He works all things together for the good of those who love Him, according to His purpose (Romans 8:28 WEB). If you feel uncertain, do not hesitate to seek professional medical advice.