I am seventeen weeks pregnant when the complications begin. This is our fourth baby, so I recognize the contractions immediately when they start. For three days and three nights I time the constant rhythm and I worry. There have been complications with every pregnancy—with each of the three babies we held on to before this pregnancy, and with each of the pregnancies we lost. I know what these contractions mean. The chance of loss, the months of bed rest ahead. We have been through this before.