Stress & Premenstrual Symptoms Study

Sertraline will be provided at a dose of 50 mg daily for up to 3 weeks, depending on the length of a woman's luteal phase. Medication will be taken only during the luteal phase. Women will initiate sertraline treatment upon determining that they have ovulated (using a urine luteinizing hormone (LH) Kit) and remain on sertraline until onset of their next menstrual period at which time they will stop taking the medication.