<prompt> Without breastfeeding the first menstrual flow usually begins --- weeks after delivery?2-4 weeks4-6 weeks6-8 weeks8-10 weeks  <response>: This is variable and depends upon whether the woman is lactating. Nonlactating mothers have an early resumption of menses by about 6-8 weeks. In nursing mothers, approximately 70 are amenorrheic until 4-6 months refer pgno:424 Sheila 2 nd edition 