8 weeks but scan only 6 weeks :(

Same! During first visit, by calculation of last period should be at week 6, but on the scan it’s jus too small. So 2 weeks later I went back and scan again using transvaginal ultra sound (thinking it should be week 8 already) and it measured week 6 instead, so most likely the conception date and last period had some difference and we calculated 2 weeks more. So now we restart and base at week 6, in another 2 weeks will check again and see if it’s progressing normally.