34+4 lost mucus plug NERVOUS

So I'm 34+4 and this morning I woke up, went twinkle, and when I wiped, there was a pinky nail sized piece of brown bloody mucus plug. I've ad 3 of my 5 previous children prematurely due to placental abruption. I'm nervous that this little guy will be coming sooner than expected. I woke up this morning with zero aches and pains which have plagued me day in and day out for the past few months, no contractions, and no moodiness. Lol. Just loss of old blood mucus plug. So what I want to know is, any other moms that have lost their mucus plug so early.......what is your experience? How long before you gave birth?