4 week 3 day pregnant but ultrasound shown nothing???

Sophie

I'm freaking out I had bleeding so I had a scan at 4 weeks 3 days pregnant and they couldn't see anything in the ultrasound? I'm panicking. They said it could just be too early. Anyone else had a scan at all weeks and didn't see anything? My HCG was 150 and 14dpo then 370 at 16dpo so surely that's a good sign? Would appreciate any advice thank you x