It could be days, weeks or hours. With my second child I started losing it at 32 weeks (confirmed by midwife) and continued losing it until I had my baby at 39 weeks. I was told that it can regenerate. Which mine did. over and over. Mine did not have "bloody show". so it does NOT have to have blood to be your plug. good luck! maybe it will be soon. If you have had a internal exam that can dislodge it