mucus plug and labor?

How long from when you lost your mucus plug did you go into labor? I know it can days or weeks but just curious what the average is?! I've had some cramping since I lost mine yesterday but nothing too serious and nothing consistent so definitely not in labor yet. We have plans all weekend (including my high school reunion about 55 miles from the hospital) so I'm wondering realistically if I should cancel the plans, especially the reunion, play it by ear or keep planning to go unless I have contractions or back pain? I'm only 37 weeks and 3 days so I figured this was my last full week with making plans.