Confused and a bit frustrated😤

Cebella

I’m supposed to be 6weeks and 5days today. When I found out I was pregnant I did an early scan at 6 weeeks, ultrasound tech said my EDD would be Dec 23rd, then I went to join my community clinic and the doctor told me Dec 24th now I decided to go to a private doctor because I miscarried 5months who for that comfort and reassurance,(also did and ultrasound) doctors told me EDD is Dec 26th!! Why everyone is giving me all these different dates???? I’m so confused!! I kno EDDs are just estimates but Jeeze....