5 week 6 day scan no heartbeat

Hi all! I just had a scan and it read that I am 5 weeks and 6 days pregnant which is a few weeks off what they originally calculated. I am freaking out because they couldn’t find a heartbeat and said that my times could just be off and I could be 5 weeks and 6 days or that something could be wrong. I asked if it was normal not to see a heartbeat at 5-6 weeks and the person was very on the fence and just said “sort of”. I am so worried and just want to know if anyone else has had a similar experience. Now I am freaking myself out and I feel like I have mild cramping but I did have that much earlier on as well. So I have no idea what to think 😭 any advice or stories would be appreciated 💕