Quoting Mommeh2bee:" Alright so my doctor checked me out on monday and told me I was 2 cm dialated and could feel babys head ... [snip!] ... with blood on monday and now with brown.. SO I am pretty sure its my mucus plug but would it be coming out for 4 days??"It can take days, But if you lose a bunch all at once it can be soon. In my case it was, but everyone is different.