Incompetent Cervix.

Has anyone had an incompetent cervix? I went in for my anatomy scan & had my cervix checked. I’m measuring at a 2.7.. anything at a 2.5 & below need a stitch, however the specialist says I’m already too far along for that. He said I could deliver at anytime time. He said he’s not sure how long I’m going to make. He prescribed me progesterone.. and I’m already getting Makena injections once weekly... & my cervix is already funneling.. I guess I’m just looking for some success stories..