Cervical Stitch

So I'm more so posting this to hear from other ladies who have been through this as well.. In April I lost my twins @ a day away from 23 weeks after being in labor for 4 days. (Background info: bad doc, didn't know it was twins (boy&girl,) bad hospital, & given no reason for loss.) OKAY so currently I am 16+1 with twins again (identical boys.) I have a wonderful OB & specialist. However, my OB has been pushing since 12 weeks for the stitch.. Problem is my very good specialist said (last time I saw him & 14 weeks) my cervix was 4 in length & I quote, "doesn't want to give me something if he isn't sure I need it.." OKAY so again today seeing my OB he told me on the 4th to tell my specialist I WANT IT NOT HIM. I'm so lost & scared ladies.. I don't know what to do.. My OB wants it before anything could happen, even if it doesn't. But they're not seeing eye to eye. But they're both such great doctors.. The specialist seems to wanna wait it out.. But I heard a second loss comes sooner & faster.. /: I feel like such a worry wart.. ): I need advice..