3 different due dates ugh

So I originally thought I was due oct 6 2023 my own assumptions but when I went for my 8 week appointment doctors told me oct 1 cool they probably right but now I went to the hospital for being in a car reck ( was hit by an 18 wheeler) and they said September 26 I know the dates aren’t to much apart I’m hoping it’s September I’m just curious why so many dates I definitely hope it’s before October 6 I’m starting to have pains and I’m half way there I hate the way I feel ugh…