Estimated due date

Amber

Hi everyone! I got my first vvf positive home pregnancy test on October 19th and a clear positive on October 24. I didn’t take any in between. At my scan, today, they put me at 6wks and 3 days. That would be nearly impossible for me to have had a positive test on the 19th.... what do you guys think? I was guessing 6-28-20 based off of the only two times we had intercourse and possible ovulation.