Is she jealous already?

The elders said kids will be more clingy to their mothers when the mother is expecting a baby junior esp near labour. I didnt give a thought about it so much initially but lately, I notice that Jerilyn is much more 'manja' with me than usual. Calls me many more times and louder than usual, sits on my lap more, wants me to carry more, shares food and drinks with me more, hugs me more and basically wants attention and love. Is this the sign of jealousy?