What is accurate first ultrasound via transvaginal or the 2nd ultrasound ?

I use contraceptives before until of my last menstruation .. and I use period tracker My first ultrasound was October 2 2019 .. and said I was 5 weeks and 2 days EDD is June 1 2020 Then my 2nd is October 10 and said i was 6weeks1day ..Edd is June 3 2020 Now pelvic ultrasound nung January 22 20weeks1day Edd:june 8 2020