Modified bed rest

Hey everyone, I'm 22 weeks pregnant with identical twins. The babies are doing great but at my ultrasound yesterday (I get one every three weeks) we found that my cervix is funneling and only closed 1.5 - 2 cm. I'm on modified bed rest and can't go to work. They check me again in a week to decide if I need the steroid shot or not. Any experiences with a similar situation?? I'm nervous but hopeful.