Yes, it could. My second labour was like that. I was 10 days over and had not an inkling of anything happening. At all. Nothing.

I went to the loo that afternoon, had quite a bloody show which I was concerned about (because of the amount of blood, my show with my first labour was very different) so called my ob. He said it was fine and just to wait for contractions to start and bam, they started. 5 hours later I was holding my son.

It honestly happened so quickly and was so different from my first labour ('pre' labour for 72 hours, sent home from hospital twice ) I was in denial and the only reason I went to the hospital was because I hadn't felt any movement.

Hopefully your little one will make their grand entrance really soon. Hang in there, I know how hard it can be