Not sure why, but it feels like this whole pregnancy I have been emotionless. when I get angry I get…

Not sure why, but it feels like this whole pregnancy I have been emotionless. when I get angry I get angry to an extent, when something makes me happy.. I really don't feel the emotion to go with it.. And when something and makes me sad I cannot shed the tears.. some weird and makes me feel weird... although lately every little thing has annoyed me to the fullest..