J.R.
A.,
I'm so sorry you're going through this. It stinks!!
I lost my first baby at 10 weeks and it then took us a while to get pregnant again. When we did conceive I was on pins and needles the whole first tri since I never really had typical first tri symptoms (nausea, breast tenderness, etc). I too had a day when I woke up and felt like something was wrong so I went to have my levels checked, then rechecked a few days later. Though I felt like something horrible had happened, the baby was fine. He is now almost 4, his little sister is 19 months old and #3 is due in 3 weeks!
While you wait for Tuesday, keep a good thought and know there is nothing you can do/ could have done to keep this baby. Making yourself crazy with worry does nothing (so keep worrying knowing it doesn't harm the baby (I used to worry about worrying!!) or try to stop worrying knowing it doesn't help). I know it's way easier to say stop worrying than it is to do it but this is out of your hands.
As the previous poster suggested, if you're of the sort, relying on God here might give you some peace of mind.
Know you aren't alone...
J.