Everyone's different. At 36 weeks I wasn't dialated or effaced. At 37 weeks I was 1 cm and 30% effaced. At 38 weeks I was 2 cm and 70% effaced. That same day I got to 3 cm and 90% effaced and I've been like that since. In 4 days I'll be 40 weeks. I really hope I don't have to get induced...
They say sex but the key is the sperm to stay inside and the pregnancy ball and walking a lot !!
I'm 38 weeks now and been 2cm dilated for 2 weeks already nothing you can really do but wait until baby is ready