I lost mine today around noon. I am 39 weeks and 1 day. I am hoping labor on its way. I am due in 6 days.
Your plug can reform so there is no telling how many time it goes before it actually counts
Nothing to worry about unless your waters have broke or you're experiencing contractions that are 3-5 minutes apart.
You can call, since your 37 weeks they're not likely to do anything about it. Your plug can come out in pieces. There isn't necessarily blood, and it can regrow and come out again. It also doesn't mean you will go into labor anytime soon. Unless you start having contractions or bleeding it's likely nothing to worry about.