Astanga Hrudaya
सञ्जातसारे महति गर्भे योनिपरिस्रवात्। वृद्धिमप्राप्राप्नुवन् गर्भः कोष्ठे तिष्ठति सस्फुरः॥१४॥
Fetus grown in strength but not grown in size, because of fluid discharge from the vaginal tract, remains inside the abdomen producing throbbing and no enlargement of the abdomen.
english translation