Doctor's appointment

Sumaiya
Hi girls - just wondering if anyone has has a similar experience. I just went to the doctor today and she did a scan and could see the gestational sac but not the baby inside. She sent me off for blood tests to test HCG levels today and on Monday and I'm seeing her again next week. She said it could be because I'm less than 5 weeks and (less than my predicted 6+w). Currently freaking out and super upset so wanted to see if anyone has had the same issues.