I should be 5w5d but sac is empty and only 7mm. 5 internal scans on 3 different machines by 5 different people over 2 days. Is there any hope? I’m absolutely certain of dates and got an early positive at 9dpo so couldn’t be late implantation/late ovulation. Google is giving mixed answers and I got different answers from the 5 different doctors and ultrasound techs - what gestation is a 7mm sac?