OK you want more stories.

First DS I had a S&S like you Dr said I was quite ripe. Had sweep at around 12pm by 3.30pm that afternoon I was started to have some very mild contractions and my waters started leaking (must have been hindwaters as it wasn't a full gush). By about 11pm that night I was in labour and about 4 cms.

DS2 I had another S&S didn't work quite as quick, from memory I had it done on the Monday felt a bit uncomfortable, strong Braxton Hicks, all day Tuesday felt the same just not quite right but new I wasn't in labour, about 4am Wednesday morning woke up with contractractions. I can't remember having a show from my plug with either of them.

Good luck and I hope it isn't too far away for you.