The Compendium of Caraka 4.8.32

4.8.32

paramato nirvikāramāpyāyyamānasya garbhasya māse māse karmopadekṣyāmaḥ /prathame māse śaṅkitā cedgarbhamāpannā kṣīramanupaskṛtaṃ mātrāvacchītaṃ kāle kāle pibet, sātmyameva ca bhojanaṃ sāyaṃ prātaśca bhuñjīta; dvitīye māse kṣīrameva ca madhurauṣadhasiddhaṃ; tṛtīye māse kṣīraṃ madhusarpirbhyāmupasaṃsṛjya; caturthe māse kṣīranavanītamakṣamātramaśnīyāt; pañcame māse kṣīrasarpiḥ; ṣaṣṭhe māse kṣīrasarpirmadhurauṣadhasiddhaṃ; tadeva saptame māse /

Hereafter, we shall instruct the regimen month by month for an embryo developing without disorder: / If she suspects she has conceived, in the first month she should repeatedly drink unboiled, measured, cold milk at appropriate times, and eat only wholesome food morning and evening; in the second month, milk prepared with sweet herbs; in the third month, milk combined with honey and ghee; in the fourth month, she should take milk-butter in the measure of an akṣa; in the fifth month, milk-ghee; in the sixth month, milk-ghee prepared with sweet herbs; and the same in the seventh month.