Cat question

My husbands cat has never really liked me. She sleeps on his edge of the bed and used to run when she saw me. This past week while he's working nights. She follows me around everywhere. If I sit down at the kitchen table she's at my feet or between my legs. She will sleep at the foot of the bed but won't come near me. When I go pee, like 5 times a night she follows me in the bathroom and sits in front of me. She's never done this. Any ideas why she's being like this? I'm 34 weeks.