I think so and that they all have their own ways of dealing with it. DD1 was very clingy for the last week of my pregnancy. She always had to have me do everything and wanted to lay with me at bed time. The day I started having contractions she was an absolute angel. SHe stayed with me all day but just wanted to sit next to me, she did not whinge, did not cry. I think she knew something was happening. Even when it came time for me to put her to bed (after laboring all day) she was great.