Rejected, Claimed by the Alpha King

As the first Luna in history without a wolf, I was despised by my husband and scorned by my family, and my life was literally worse than an Omega! On our sixth wedding anniversary, I got pregnant, but my husband's first love - my sister - also returned... From then on, I was haunted by nightmares! My husband favored my sister in everything, and he even secretly held wedding ceremony with her! I was in despair and left with the child in my womb, only to discover when I turned around... my mate was actually my husband's uncle - the terrifying Alpha King! Wait! The child in my womb seems to be the King's too? I was completely dumbfounded - can someone just tell me what happened?! Then another shocking secret was revealed. My real family came looking for me, and they smiled at me lovingly, "Dear princess, welcome home." Huh? So I am a princess now? Jesus, what is going on!