The baby can be in the head down position between 2 to 4 weeks prior to labor if a woman is a first-time mother, according to Ask Dr. Sears. However, in experienced mothers, this can occur when labor begins. When the head drops down into the pelvic region, it is called lightening.
Some other signs that a woman is ready to deliver are a bloody or brownish discharge, the need to urinate more often, diarrhea and backache, states WebMD. A brownish discharge can be the mucus plug, which can be released a few days or right before labor. Some other signs of imminent labor are contractions and the rupturing of membranes, reports Ask Dr. Sears.