Hearing unearthly sounds in a dream is not pleasant omen.
Dream dictionary: Uttering dream meanings
…In a dream, exclamation of God’s sovereignty, i.e., uttering the formula ‘La Hawla Wa La Quwwata Ilia Billah’ (There is no will or power except that of God’s Almighty) means constant repentance in wakefulness and hope for salvation. It also means conquering one’s enemies. (Also see Exalting God’s oneness)…
…Dreams about pigs are decidedly unlucky, and mean anything from slight accidents to downright calamities.One lady, prior to her youngest child falling down a well and nearly being drowned, dreamed she saw him riding up and down the front lawn on a big white pig, which eyed her with an expression of fiendish malignancy; whilst someone else, shortly before he lost all his money in a brewery, dreamed that he saw a herd of white pigs outside his front door, pawing the ground and uttering the most piteous cries….
…(arb. Talbiyah) Responding to a call, or uttering and repeating a formula “Labbaika Allahumma Labbaik,” during the pilgrimage season in a dream means that one will capture his enemy and bring him to justice. Loud answering to a call in a dream means complaining before a judge, and winning the case thereafter. (Also see Hajj | Feast of Immolation | Pilgrimage)…