How long from bloody show to labor?

Brittany • Married, mama to 3 boys. Leighton is 3 years old (7-14-12) and Owen is 1 year (4-20-14) due with Logan, September 28, 2015 :)
I was just in the hospital again last night for contractions, so I was checked and I know it can be normal to have blood tinged mucous after, about 2 hours later I had brown tinged mucous (meaning old blood) but then this after noom, 8 hours after, I had bright red mucous... not sure if it's from being checked or if it's "bloody show"? I'm already 3cm and 60%. But I've been having contractions again today now. I haven't timed them today, since I plan on laboring at home for as long as possible anyway. This is baby #3 and it's a back to back pregnancy. Just had #2 in april 2014.