Sorry Bonnie, I have no personal experience to help you with. My SIL delivered her daughter at 24 weeks, and she thankfully survived, but miscarried the next bubs at 15 weeks. The doctor suggested she had an incompetent cervix and they put a stitch in with her third pregnancy, which she then carried to term.

She tells me it was fairly painless experience and once in did not give her any issues at all.

Hope it works successfully for you, and someone with more knowledge can come give you some reassurance