Toddler acting differently?

Ki

I’m not sure why, but my 19 month old has been acting really clingy since I found out I was pregnant. I’m not sure if it’s related. He insist on only sleeping in our (parents) bed if I’m in there. If it’s just my husband, then he just screams and cries. He desperately wants me to hold him. If I even hint at putting him down he freaks out. And he’s been acting out a lot more. Biting, hitting, throwing tantrums easily. I’m not sure if he’s going through a phase or if he might somehow be aware that a new one is otw. I’ve told him, but I doubt he understands.

Anybody else’s toddlers behavior change when they found out they were pregnant?