Bed Rest for Threatened Preterm Labor. Pilot Study

The woman assigned to the bed rest group, will be instructed to keep in bed for the study period of four days and will be allowed to go to the toilet

Women assigned to activity restriction group will do the restriction of activities during four days.During the activity restriction phase the women will be allowed to ambulate at home, work at home (home office), child care, household tasks, meal preparation or any forceless activities.