Having to leave your baby in hospital is a terrifying thought.
He did say to me, as well, that even though I have the stitch there is always still a possibility my waters will break or i'll go into labour pre-term. And that is what happened in the end. I was due to have the stitch removed at exactly 37 weeks, and at 36w2d my waters broke and i went into labour. I went straight to hospital, he met me there, and cut the knot of the stitch (he couldn't reach the stitch well enough to remove it completely as i was already in labour so he just cut it to make sure it wouldn't damage my cervix). I immediatley went to 3cm dilated. My son was born 7 hours later (natural birth).
I have heard a lot of success stories from people that have had cervical cerclages. I really do think if the cause of the previous loss truly was due to an incompetent cervix then a stitch really does help. Even if just to get you almost to the end.
He didn't put any kind of restrictions on me, like bed rest etc, but I myself decided absolutely no heavy lifting (i even got hubby to bring in the groceries etc), and i tried to lie down whenever possible. I do believe things like that help. No bathing or swimming (the run the risk of infection) and no excercise. No long walks etc.
And then just take it one week at a time, make small goals for yourself. For me, i was desperate to get to at least 26 weeks, because i knew then my baby stood a decent chance of survival. My next goal was 28 weeks, because then survival is almost guaranteed. Then i wanted 32 weeks because that is a major and very significant milestone in pregnancy, and means the risks of serious long-term complications is drastically lowered. And then i wanted 34 weeks because by then you're almost guaranteed no serious complications. And then i wantd 36 weeks because i my mind that was as good as full term.
Having those small goals really helped me.