seriously annoyed

Nikita
Ok so bit of a rant but feel free to share You comments , today I had my 25 week midwife appointment to which she decided to tell me on my notes I'm only 23 weeks + 3 days and I was like how ? She said that on my last scan it states my LMP was 30th September meaning my due date is 7-7-17 , which is impossible my LMP was 19th September leaving my due date the 26-6-17 , now they did mention at scan my baby was measuring small but surely they can't just make up a date that u had ur last LMP when I know for certain what date it was as embarrassingly enough it happened on my flight home for a buisness trip 🙈 now I'm having serious anxiety that if they have changed my due date leaving me to go another 11 days more than I should then if she doesn't make an appearance they will let me go a further 10 days meaning I will 3 full weeks pregnant more than I should be 🙈 and reading the complications online of over due baby's scare me . They can't change the date of my last LMP due to size of baby can they ?