Задержка развития плода на 2 недели: у кого было такое? Срок 7 недель, а на УЗИ 5 недель. Что делать?

I'm really confused I'm meant to be 7weeks as of my period but had a private scan yesterday saying only yolk sac 4+6 (today should be 5weeks) 2 weeks behind is that possible my cycles are usually 32 and my period lasts 7days but people are saying I could of ovulated later the paper one is yesterday the other scan was 4days ago I go back next Wednesday as I'll be 6weeks 🙏🙏🙏 can someone work it out plus these are the days we dtd my last period was 8th Feb