First U/S not so good

Well, it looks like I am 6 weeks 2 days AGAIN (or I was a week off on my calculations). Dr. B-W couldn't even see the baby. She did find a big cyst which she said is what is supposed to be releasing progesterone until the placenta takes over. She also saw a little "bubble" looking thing that she didn't call a sak but I'm assuming that's what it was. But she couldn't see anything that resembled a fetus or a heartbeat. She said this doesn't mean I'm not pregnant (and my preg. test came bac positive again). But she did want to do repeat blood work. So, I had ANOTHER HcG done today. Yes, that's 4 now! And she did another progesterone check. She said she would call back today if she had the results but I never heard anything so I will have to call in the morning. In my heart, I feel like this baby is ok and that I was just a week off. But my mind says something must be wrong for her not to even be able to see ANYTHING. My husband is very upset especially since we expected to see something and we've wanted this for a long time. But, I KNOW God put this baby inside of me and he will protect him/her. I just wish this pregnancy wasn't so hard already. I do definitely feel pregnant but so much can happen during a pregnancy and we couldn't get back into the doctor until July 29!!!! That's FOREVER away. :(