Background: During pregnancy there are many complications and warning signs which many complicated the pregnancy in first trimester severe vomiting, chills, fever, burn in urination, diarrhea, abdominal cramping, vaginal bleeding. second and third trimester persistent severe vomiting, UTI, severe back ache or flank pain change in fetal movement pattern, visual disturbance, occipital head ache, swelling of face or fingers, convulsion, epigastric pain, glucosuria and sudden weight gain >2kg [1].

Aim: The aim of the study was to assess the level of knowledge regarding warning signs of pregnancy among antenatal mothers.

Objectives: 1. to determine the level of knowledge regarding warning signs of pregnancy among antenatal mothers.

2. To find out association between knowledge level of mothers and the selected demographic variables.

Methodology: 30 antenatal mothers from NMCH, Nellore were selected by using non probability convenient sampling technique.

Results: Regarding the level of knowledge among antenatal mothers, 3 (10%) of them are in B+ level, 10 (33.34%) of them are in B level, 7 (23.33%) of them are in C level and 10 (33.33%) of them are in D level.