I lost my mucus plug with my second child around 36 weeks, sometimes you can lose it and it will reform, I would call your doctor since you are only at 29-30 weeks, I would lay low, avoid lifting anything over 5 lbs and no baths until you have seen your doctor and been advised different…you do need to make the call though, if you have lost your plug but your cervix is clamped shut and not dilated then chances are you have a while before you need to worry, if you are dilating then you may have some issues and need to be on strict bed rest, because I am not a doctor this comes just from general knowledge and info I have gleaned from having 3 kids….please call in and be sure to get checked out!! Keep your hospital bag packed just in case…let us all know what happens…Love Meg