What does it take to change the due date?

Chelsea

I went into the ER last week for a massive bleed. I was 10w4d at the time. Baby was fine (miraculously) and measuring at 11w3d. With a discrepancy of 6 days, I don’t know how far along to consider myself... should I still go off of the original gestational age or the new one? I see my OB on Wednesday for a follow up. Thanks!!