Kids acting more whiny and clingy?

Alexandra • Hi💛 I am a proud SAHM of two beautiful little girls ages 7 and 6 and a beautiful 6 month old baby boy ☺💛. Love the community here!
My two girls, 4 & 5 have been so clingy and whiny lately 😰 I Love them so much but they have cried for just about everything today and that isn't like them 😰 6 weeks today💛. I heard it could be their subconscious reaction to pregnancy. Are any of You mommies seeing the same in Your kids?