After waiting until contractions were 2-3 minutes apart, we went to the hospital. Once there, contractions were only 6 minutes apart and I was measured at 1 cm dilated, ~10% effaced.
We were there 2-3 hours; contractions eased off, though I still made progress (got up closer to 2 cm dilated). I walked the halls for a while (even did jumping jacks), but it looks like it could be a good 5-6 hours before I'm really in need of a hospital, so... I'm back home.
Like I told DH, I just feel foolish. I don't want to be a burden on anyone or ask for more than is necessary, so thinking I was much further along and finding out how early things are means I don't feel like I can trust my estimation of what a contraction feels like, how far apart they are, or anything in that realm.
I'm tired. I was up 'til 3 this morning timing contractions, then woke ~6:30/7 to start timing the next round of contractions. I need to go to bed.