So I went for my first u/s this past week. When I calculate out the dates I would be 7 1/2 weeks. She said I was very early and there was only a sac, no heart beat. We're going back in 2 weeks for another u/s. I feel like the whole visit I was in shock and didn't even get to ask my questions? Does this mean I calculated wrong? My lmp was 2/5. Or is it normal to not have a heart beat at 7 weeks? It was only an abdominal u/s.                 
                             
        
Re: First us
I saw a blob with a HB today at 7+1 via abd US but, last week at 6+0 I couldn't see anything with abd US -- for the record I'm 118# at 5'6"- and had to get measurements with TVUS -- I'm measuring 1 week behind LMP dating but didn't track ovulation and