They may help others to have fetal dreams because they talk to each other during the day, or meet each other for dinner during the day, or live together as a whole. Under the daily thinking and daily contact, there are related contents in the subconscious of the brain, so when dreaming that night, it is presented through dreams. Dreaming is very complicated, and there is no way to explain why you have a similar dream, so you don't have to be too nervous about having someone else's fetal dream.
Helping others have fetal dreams is not necessarily accurate. If the other person is full of expectations for pregnancy, in order to avoid disappointment, it is best not to tell her, otherwise the greater the expectation, the greater the disappointment, and it will easily affect the feelings between each other.
People will have all kinds of dreams all their lives. When I dream, I dream that someone around me is pregnant. When they are awake, they can still remember that it is not necessarily a fetal dream, but also an ordinary dream. There is no need to explain your dream. It will be more pleasant if everything goes with the flow.