Accuracy of Glow pregnancy weeks

Brook

Hi everyone so I tested last night and today with clear blue and both came back positive! When I updated glow its saying 6 weeks pregnant, apparently I learned it starts from the start of your last period.

My question Is am I truly 6 weeks or is it less Since I didn't ovulate on my period. My last period was May 11th and my average cycle is like between 31-39 days. Thanks!!