What Does Losing Mucous Plug and Spotting at 38 Weeks Mean?

First labors usually take many hours. There are exceptions but if you just keep track of the signs and don't ignore them you should be fine.

It's normal to have bloody show as you start to dilate. Probably early labor. :) I did the same thing starting at 37 weeks 6 days and had my baby at 38 weeks 2 days