How far a long am I?

Sarah • Married 👨‍👩‍👧‍👦👶Momma of 3- 2015🎀 2016👦 2020🎀

So I have a positive around a week ago, I logged it into glow it said as of today I would be 6 weeks and 2 days, but I counted it from ovulation this month, i would be of been 4 exactly today, I rang my midwife and she said to go with my period date meaning I would be 6 weeks and 2 days I’m so confused

ALSO DONT KNOW WHERE TO POST 🤦🏻‍♀️