Hi everyone, I have a question. So because my daughter was born at 34 weeks and the doctors don't know why or what caused it, my doctor wants me to start taking progesterone shots at 17 weeks every week til I have this baby to prevent me from having it preterm. Has anyone else had to do this? I thought the baby makes its own progesterone in the placenta after 10 weeks so I don't understand how this shot will help.