can someone help?..

Mrs. r

I went in yesterday for an early ultrasound I was 6 weeks and 2 days going by lmp. we really didnt see anything except for a possible gestational sac. inside of this black spot appeared to be something but ultrasound tech said it's still super early to make anything out because my l.p. varies so much and us not the typical 28 days. I'm so scared. i had betas done yesterday and it was 2,.474... is th at low ? could I not be as far along as I think I am? I go in for another blood draw tomorrow..