You're just barely full term, give it time.
Hang in there. I was not dilated at all at my appointment at 38 weeks and 3 days. I go again on Tuesday 8-20. It can happen all at once or you could be dilated starting around 36/37 weeks but then not make much progress. This is what I am hearing from a lot of people. Everyone is different. Hang in there.
Im still not dialated at all and im 39+5 my cervix is soft finally but thats it.
For what it's worth I'm 39+2 AND they attempted to induce using prostaglandin gel yesterday, and I'm only 1 cm and still thick.