Why is my daughter behaving like this now?

my daughter is almost 2 1/2 and for the past few days she has been really clingy to me and her dad, shes usually a really good sleeper and falls asleep once in bed but she keeps getting up calling us saying she wants kisses and cuddles, when we go up to her she doesnt actually want any attention just for us to be there, she has started waking in the night aswell. she plays up at bath time and cries the whole way through when usually she loves them. im 36 weeks pregnant could it be because shes sensing the baby will be here soon or is this normal at her age? she gets lots of love and attention all through the day and she knows how much we love her, we just cant work out why shes being so clingy all of a sudden.