How can I count labor length?

Lucy

So I was Induced and gave birth almost 11 weeks ago and Just starting to wonder now how do I count the hours of labor I’ve endured (you know how those mothers in movies like to bring that up when the kids are misbehaving). So my question is, do I count from the time the cervidil was inserted, or when I started having contractions, or when pitocin started? Any ideas?