According to Islam, there are at least 3 kinds of supernatural beings: Angels, Devils, and Jinns. You also add to this 2 kinds of hybrids: Ifrits (hybrid of a Jinn and a Devil) and Golems (It's not the name but I like to call them like that, they are hybrids of a Jinn and a Human). Angels are always good. They have no free will. read more
Or maybe a Jinn entered your body with compulsion from a spell, that would be sorcery. He doesn’t like Quran, so there’s high probability that he’s a bad Jinn. It can also be a Ifrit. read more
While hallucinations can involve any of the five senses, auditory hallucinations (e.g. hearing voices or some other sound) are most common in possession, often occurring when you misinterpret your own inner self-talk as coming from an outside source. read more
The fact that jinn can enter human bodies is proven in the Quran and Sunnah (prophetic teachings), and by the consensus of Ahl al-Sunnah wal-Jama’ah (main body of Muslims who are united upon the sunnah), and by real-life events. read more