The Compendium of Caraka 4.8.25

4.8.25

yasyāḥ punarāmānvayāt puṣpadarśanaṃ syāt, prāyastasyāstadgarbhopaghātakaraṃ bhavati, viruddhopakramatvāttayoḥ//

For her, however, who has an appearance of menses owing to the association of āma, that usually causes injury to the embryo, because the treatments for the two are mutually opposed.