Hoping.

Okay so my LMP was October 1st, which gave me a due date of yesterday, July 8th. In March I had my first and only ultrasound (I should have been 25 weeks, but measured 18 weeks) They changed my due date to August 27th which puts me at exactly 33 weeks todayy. Is is possible they were wrong and July 8th should have been my due date still? I just want this prgnancy to be over.