CC Ādi 13.87

haite haite haila garbha trayodaśa māsa
tathāpi bhūmiṣṭha nahe, — miśrera haila trāsa
Word for word: 
haite haite — thus becoming; haila — it so became; garbha — pregnancy; trayodaśa — thirteenth; māsa — month; tathāpi — still; bhūmiṣṭha — delivery; nahe — there was no sign; miśrera — of Jagannātha Miśra; haila — became; trāsa — apprehension.
Translation: 
In this way the pregnancy approached its thirteenth month, but still there was no sign of the delivery of the child. Thus Jagannātha Miśra became greatly apprehensive.