when you are pregnant, nothing else should be allowed in the mind because these are the impressions which the child will carry for his whole life.
The child is not just a part of your body, it is part of your mind too. It is nourished by your body, it is nourished by your thoughts, it is nourished by your emotions, it is nourished by your inner vibe!
When the mother feels sad, the child feels sad. When the mother feels happy, the child feels happy, because the child has no independent existence yet: it simply vibrates with you.
So when a woman is pregnant she has great responsibility. It is not only a question of your being happy or not, because that is not such a big thing: you can be unhappy and come back. But the child is learning, absorbing, and that will be his whole life’s reality.