Ceain sign of onset of labor: March 2013: (A) Labor pains, (B) Show, (C) Dilatation of internal os, (D) Formation of bag of waters
Answer is D. Ans. D i.e. Formation of bag of waters The first symptom to appear is intermittent painful uterine contractions followed by expulsion of blood stained mucus (show) per vaginum But formation of 'bag of membranes' is almost a ceain sign of onset of labor