Anxious

I can't help but post about this again. My doctor said I could just be too early and that's why there was no baby but it's devastating when I thought I was 7 weeks. I have no cramps no bleeding or anything like that which I guess is a good sign. I go back in for more blood work on Monday and another ultrasound in 2 weeks. All I do is pray and pray that the next time I go in I'll see a baby. This is baby #2 and I didn't experience this at all with my daughter. I've read that this happens a lot and women carry on healthy pregnancies but I can't help but get the thought out of my head that I might lose this baby. Any advice would help.