You may have inadvertently opened yourself up to the stomach problems by listening to and believing the psychic. In the Bible Jesus often casted out demons and then the person with the demon was healed, such as the old lady who was bent over for many years. Jesus casted out a demon of infirmity and she stood up straight.
Even if a psychic does know something, it is actually forbidden knowledge she acquired from a demon. Demons watch and learn many things that they can use to fool us into believing that they are good guides when they merely are evil. They watched and kept track of things to use to fool us. We must not gain knowledge through them because it is ultimately meant to deceive and harm us. We must learn to rely on God for any knowledge or help from a spiritual source. He is enough and knows and does what is best for us. He is willing to guide and help us if we rely on Him and Him alone. He will not share His glory with demonic powers, even if they are masquerading as good, because they are not.
When we come to God, we must come to Him in Jesus Holy Name, as one of His children. We become his child when we ask Jesus into our hearts and lives and accept the forgiveness that comes through acknowledging that He shed His precious blood for us, for that forgiveness. We come to God in Jesus Name and receive adoption into His family. He becomes our Heavenly Father. We are born again into His family with forgiveness of sins and eternal life. Then we can come to our Father in Jesus Name, with faith, and He answers our prayers.
If the psychic is right and Alice shows up, I’m going to thank GOD, not the psychic so the devil won’t gain diddly squat from me.