Doc said it could have been a stomach bug but could also be my body getting ready for labor.
Black colored stool is can also be a sign of blood in your stool. But if your doctor isn't concerned then that it is probably not the reason. What did your doctor think it was? It sounds like you're getting ready for labor :-)
Black color bowels is a sign of dehydration most of the time.
It's quite common for your body to "clean itself out" so to speak before labor. If the runs last any longer than 24 hours and you begin to feel unwell go to the doc
Doctor told me I'm 3 centimers dialated today
Im on my 3rd and felt like that for the last week (im 36wks) I feel like going for a walk daily has helped...maybe were close to labor I sure hope so!!! Make sure your drinking enough water too