My cat has been acting strange since I got pregnant

Bree

So I’ve have a cat named Olivver for almost a year now and he was always connected more to my fiancé. But recently he’s always by my side. He’s started to sleep with me and be by me whenever possible. He literally follows me to the bathroom and lays by my legs. Research has been saying that’s since I got pregnant that he will be more protective but early in my pregnancy he was kind of an ass lol. But this week (I’m now 15 weeks) he’s been super clingy. We have another male cat who has shown none of this. I’m super confused.