My 2nd ultrasound today..

I went today for my 2nd ultrasound expecting to see a heartbeat. The sac had gotten bigger but still nothing in it. The Dr said he couldn't get a clear view but he doesn't think it looks viable. Today I should be about 7 weeks 5 days. So, I am just waiting till something happens. He is having me come back in 2 weeks for another u/s which at that time he will be able to make a clear call on it. So, here I wait another 2 friggin weeks.