Dreams are mostly meaningless. As someone said, pray before you sleep and you will rest better. If it persists, you may under a demonic attack. Since I was delivered from a number of evil spirits, I rarely dream, or at least, I have no recollection of dreaming. "Resist the devil and he will flee". You can command evil spirits to leave you alone. Make sure that you put on God's armour every day. Use God's word, the Sword of the Spirit, to repel Satan's attacks. For example, you could declare that God has not given you a spirit of fear, but of love, power and a sound mind.
You may have to persist for a short time. Demons are subject to us, so they have no choice but to obey.