Bloody Show Question

Brittany • 27. Finally got my BFP after 11 cycles of TTC by using the SMEP, Preseed, and a whole lot of prayers!!
For those of you who saw your bloody show, how long did you experience it prior to labor beginning? Hours? Days? Weeks? 
I experienced it for the first time this morning when I got up for the day. Then it was gone after that initial show up. But then it came back this evening and it's a bit heavier than it was this morning. It's still pink/light brown. Could labor be approaching tonight? 
I'm due Wednesday!