My friend had a stitch with her first pregnancy, and it was absolutely fine, she carried to term and had no complications. I think she was also on Progesterone in addition to the stitch x
I had my stitch at week 23, and now I am at week 35. They will remove it next week. I had also used progesterone since week 20, but I stopped last week. Good luck! Everything is going to be ok!
I haven't but a friend has had the stitch and it's going well so far, they are now nearly 19 weeks.