Measuring more weeks!

When I had my ultrasound yesterday I found out that I am measuring 10 days before my due date. I haven't had my baby shower yet. I was hoping to have it on the 17th of this month because my due date is on the 24th. But the technician measured that my due date should be on the 14th. I am so overwhelmed, I am hoping that today my doctor doesn't try to change my due date. I am willing to beg, but I dont think that it will work.