ellysia,
this is what i read from web..
Dream studies have shown that certain types of dreams are more common in specific times during a woman’s pregnancy.
First trimester themes are often about:
Water and water symbols – It is thought that this is due to the woman’s awareness of the amniotic fluid and the increase in amount of fluid in a pregnant woman’s body. Plus the fact that the urge to urinate happens more frequently for a pregnant woman – your body might be trying to tell you something!
Buildings – Buildings can symbolize a woman’s body, because of the open spaces that are within them, and because of the work that goes on inside them – a subconscious representation of pregnancy. The buildings often get larger as the pregnancy progresses, and dreams about skyscrapers late in pregnancy are common.
Second trimester dreams are often about:
Animals – Animal dreams are thought to be the result of a woman’s awareness of the baby’s movements. Dreams about animals also represent the baby, and concern about how the relationship between mother and child is going to be.
Third trimester dreams are often about:
The baby – As the pregnancy progresses to the end, dreams tend to be about the baby itself – what it will look like and if it is a boy or a girl. Many mothers are “given” the name of the baby in a dream. You may also work out any anxieties about caring for the new baby by dreaming about day to day care of the child, or hazardous situations in dreams that you must rescue your baby from.
Sex – Sounds strange, but it is true. Pregnant women dream about sex often during the final months of pregnancy. Since it is hard to be intimate in the final months of pregnancy because of your expanding tummy, it is thought that the sex dreams are an emotional compensation for less sex in the real world. Dreams about sex also help to reassure a pregnant woman that she is still desirable and loved.
Relationship dreams – A common theme of dreams in the third trimester is relationship dreams. This is the subconscious working out anxieties about how the relationship with your partner is going to weather the changes caused by a new baby.