TgO Gen16:4 :וַחזָת אֲרֵי עַדִיאַת‏ : when she realized that she had conceived
See the entire entry for ḥzy vb. to see

TgO Gen16:4 :וְעָל לְוָת הָגָר וְעַדִיאַת וַחזָת אֲרֵי עַדִיאַת‏ : he had relations with Hagar and she became pregnant and she saw that she had become pregnant
See the entire entry for ˁdy vb. to pass over