The mucus plug is inside your cervix, so you will feel your cervix first. Unless your cervix is open enough for you to get fingers into it (at your stage i'd not expect you to be more than 1cm and if this baby is your first you might find you can't even reach your cervix as it will be high, posterior and closed) you won't dislodge anything - the mucus plug is released by the cervix opening. I had FOUR stretch and sweeps and only lost a teeny bit of plug each time.

I could *just* reach my cervix when it was still posterior, and could only get one fingertip into it.

Happy exploring

Bx