Nothing, dreams have no inherent meaning but are simply random thoughts.
As this category is "Dreams and Dream Interpretation," here is an interpretation of the dream:
The pregnancy in this dream is a metaphor for something the man is "developing," or 'gestating" in the sense of an idea or project. This project is as important to him as if it were his own child, as in the common expression, "that [antique car] is his baby."
Pregnancy dreams are usually about change, specifically anticipating change.
Dreams are about the dreamer. So if another person dreamed that you were pregnant, in the dream "you" represent something about the dreamer herself.
Dreams use metaphors to illustrate the dreamer's feelings. Some men believe that women intentionally get pregnant as a way of catching or harming a man. This dream suggests that the dreamer fears a girl will use her pregnancy against him, while feeling no responsibility for the pregnancy himself.
Usually nothing. It could just be them wanting you to be pregnant, or just a freak thing. My mother dreams of me being pregnant quite frequently but I am no where near ready for a child right now.
It means that you're thinking about pregnancy. Dreams have no external sources.
Each dream is about the dreamer. In any other person's dream, "you" are an image that represents the dreamer in some way. So if someone dreams that you are pregnant, that dream reflects something about that dreamer, not about you.
The dreamer's real life situation is likely to have bearing on the meaning of this dream, particularly if someone in the family is pregnant. If so, the dream represents the man's fear for the welfare of the woman and the pregnancy. But it is more likely that the "pregnancy" is a metaphor for some project or task that is important to the man. The dreams suggest the project is at risk of failure (cancellation) before it can be completed and delivered.
Dreams are not necessarily consistent with reality and are not governed by logic. A pregnant person might appear in a dream as a symbol of something being "developed" or "coming into being." In this way, the subconscious mind uses literal images to present metaphors. In dreams, a man might be pregnant and give birth to a book or a house. That would represent the struggle and effort involved in producing a novel or constructing a building. In dreams, anything can happen.
Dreams can mean everything or nothing, they are less controlled than some people would like to think. Your dream possibly means that you are desparate for a baby.
A Man Has Dreams was created in 1964.
that she is pregnant
Vivid dreams are not a reliable sign of pregnancy although many pregnant women have vivid dreams. Similarly, many pregnant women are also unusually hungry, but all people who are unusually hungry are not pregnant. Neither dreams nor hunger are reliable symptoms of pregnancy.