Astanga Hrudaya
तथा हि बीजं गृह्णाति दोषैः स्वस्थानमास्थितैः। लिङ्गं तु सद्योगर्भाया योन्या बीजस्य सङ्ग्रहः॥३५॥
in such a state, when the dosas are in their normal abodes, she can receive the male seed The signs of conception are – implantation of the seed in the yoni (uterus and vaginal tract),
english translation
tathA hi bIjaM gRhNAti doSaiH svasthAnamAsthitaiH। liGgaM tu sadyogarbhAyA yonyA bIjasya saGgrahaH॥35॥
hk transliteration by Sanscript