high risk for another premie

My pregnancies in order: ectopic, misscarriage , late term premie (exactly 36 weeks) and new pregnancy. My daughter just turned 1. My dr says Im considered high risk for having another premie especially since its so close to my last pregnancy (due date is before my daughter turns 2). Most likely I will need weekly progesterone shots weeks 16-36, biweekly ultrasounds weeks 28-36 and possible bed rest weeks 34+. Im terrified.. anyone have any experience with this or had a premie and their next baby make it to term??