hCG levels

Kymbrye
I went to perinatal yesterday - was supposed to be a pre-pregnancy visit but I got a BFP on Wednesday. I'm about 16dpo and they tested my blood after they did an transvaginal ultrasound & saw a sac. Dr said it's not quite what they look for when they see a pregnancy but I do have a sac and it is high up in my uterus where they want it to be. My HCG level yesterday (15dpo) was 929, I get tested again tomorrow. 
Ladies what were/are your hcg levels early on AND how far along are you? 
They said that level shows I'm only 2 weeks pregnant... but the calculater they use said 6 weeks today... i'm confused.