TG summed up my thoughts. I am told mine is always shorter and 1cm dilation at any point in time during my pregnancy is normal for me as I am multiparous. Although I can understand how concerning this is for you. I would be scared too. It could well be that your cervix is experienced now - but talk to your specialist about your concerns and make sure its monitored to your liking. Never feel like any concern is too much to ask. You and your baby's health is the job they are being paid to care for.