Amenorrhea is the medical term for the absence of menstrual periods, either on a permanent or temporary basis Pregnancy is an obvious cause of amenorrhea and is the most common reason for secondary amenorrhea. Patient and Method: The patient was referred to Khartoum North Teaching Hospital, Khartoum state Sudan from remote area in North Sudan in May 2012. The patient was admitted, treated and discharged in a good condition. Results: 35 years patient married before her menarche had seven normal

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... aginal deliveries, at home running on her eight pregnancy referred as a case of deep vein thrombosis. She was treated and delivered vaginally term baby, six weeks latter IUCD was inserted as suitable method for her. The patient was lactating her baby for two years as usual then experience vaginal bleeding as abnormal and was proofed to be her normal menstrual. Discussion: Most girls begin menstruating between ages 9 and 18, with an average around 12 years old. The patient was get married at 12 years of age before her first menstruation and delivered her first child when she was 15 years old. She lactated her babies proper and had lactation amenorrhea. The lactation amenorrhea method has been shown to be 98% effective in typical use. IUCD was inserted after 2 years she regained her normal menstruation as a first time. Conclusion: Lactation amenorrhea is an effective method of contraceptive if it was fulfill certain criteria, known as "ecological breastfeeding" and of particular use in developing nations where contraceptives are not widely available or affordable.