According to Dawn Olsen in her article, "Pregnancy During Menopause," (2010), the possibility of pregnancy is a concern for about 12 months after the start of this physical transition.
Menopause is defined as the gradual stopping of the menstral cycle for women for 12 consecutive months. During this time period, a woman's body continues to generate estrogen and progesterone. As long as the body produces sufficent amounts of these hormones pregnancy is a possibility. After the first year, the likelhhod decreases. As a result, if pregnancy is not in the plans, precautions should be used when engaging in sexual activity.
When planning life changing activities for these very productive years for most Americans, having a new baby can hamper completing many dreamed about long term goals, for couples that are rediscovering the joys of their relationships.
I hope this is helpful.