Wow!!!! 2nd ultrasound

Ebony
So I had my second ultrasound and when it was done My Dr said she still can't see anything I'm 3weeks as of today and my hcg levels are still rising she said she should at least see the sack I nervous so she sending me for a more extensive ultra sound just trying to stay in a happy place...has anyone else had this problem and everything was just fine with your baby