A lot of factors contribute to the success of a woman getting pregnant but it is quite difficult to determine exactly the duration of having a successful pregnancy.
Some factors that should be considered for couples who want to have a baby are intercourse or sexual contact that are timed following schedule of ovulation and cycle of women, and quality and quantity of sperm. In addition, couples should consider a healthy lifestyle free from smoking, alcohols, and drugs, a balanced and nutritious diet, and maintaining a normal weight for their age. These factors are more important for women who will bear the baby in their womb for nine months. Taking folate supplements and multivitamins, and avoiding caffeine also contribute significantly to a healthy childrearing.