SB 5.8.5
tasya utpatantya antarvatnya uru-bhayavagalito yoni-nirgato garbhah srotasi nipapata.
Translation by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
The doe was pregnant, and when it jumped out of fear, the baby deer fell from its womb into the flowing waters of the river.
Purport by His Divine Grace A. C. Bhaktivedanta Swami Srila Prabhupada:
There is every chance of a woman’s having a miscarriage if she experiences some ecstatic emotion or is frightened. Pregnant women should therefore be spared all these external influences.