Toddler acting strange because pregnancy?

Alexis
My 22 month old son is acting really strange, he has been super clingy to me and wants me over his dad. He has also been throwing these crazy tantrums. His behavior has been strange. I'm 37 weeks as of today and i think his behavior has to do with my pregnancy. Is that crazy? Are there any other moms out there experiencing this? If so, did the baby come shortly after the strange behavior?