Some of the list of moods and emotions are as follows
She might be feeling fatigue and tired in spite of having a good sleep.
At a certain moment she must be happy but the very next moment she could be sad and unhappy.
She might feel drowsy and the other moment she can be really active and energetic
As she keeps going close to the date of her pregnancy she can feel the discomfort in her physicality and also mentally.
These sudden changes in the mood and emotions are basically because of the hormonal changes in her body.