I gradually lost mine starting around 32 weeks in my first pregnancy and my daughter was born 36/6
I'd say if you have any bigger amount of blood or closer more consistent contractions you should get checked again .....good luck
I definitely am keeping track. Thank you for reply.
My friend lost her plug two days ago... She is now 100% effaced and 3 cm dilated... Our doc said any day now .. 1 week tops..... But she was 75% effaced and 2 cm dilated for a week so it just depends keep track of your contractions everyone is different :)