Nikki Bella grew unbearably 'horny' during pregnancy on Thursday's episode of Total Bellas, but her partner Artem Chigvintsev wouldn't have sex with her. Nikki's fiancé Artem, 38, wouldn't make love to her because he was afraid he was going to 'poke the baby,' she said frustrated to the cameras. Naked swimming: Nikki Bella grew unbearably 'horny' during pregnancy on Thursday's …