Measuring a week behind with a HR of 116bpm

CRYSTAL • 🌈🌈 Taylor Naomi💜 August 8, 2020--Baby Cobb April 3, 2025

6weeks 2days according to the US, but 7w1day according to my LMP and OD of 11/12. I got faint positive tests on 11/20, blood HCG 11. Doctor says this is normal and can happen but I'm worried 😑