Nikki Bella shared her most “special’ time of the day — in bed with fiancé Artem Chigvintsev — and gave fans a pregnancy update.“So bedtime has just become my favorite, not just because — oh, the baby’s kicking! — not just because I’m super tired, but it’s the time where our baby is the most active,” the 36-year-old said in an Instagram Stories video on Saturday, June 6.“The belly is definitely getting very, very big,” she added as she lay in bed wearing a sleeveless black top that was pulled up