Stuck in Beta Hell

Well, I'd love to say that we are well on our way to our fifth week of pregnancy, but I can't. We just don't know. I'll go back to last week because I haven't updated since then. I had been testing on home pregnnacy tests (HPT) for a few days by the time I went to have my beta blood draw done on Tuesday. I was expecting good news because I had been getting positive pregnancy tests for a couple days before then. I was also having classic pregnancy symptoms. I was a bit shocked when my numbers only came back at a 27. That is very low compared to what it should be. Our doctors would have liked to see it more around 100+. We were told that it could be a "chemical pregnancy", when the baby implants and starts to get going, but then stops growing. It could have just been a late implant and set us back a few days. Or I could just have low numbers and have a normal pregnancy. When I was pregnant with Abi I was told that I had low numbers in the beginning of my pregnancy, the numbers also didn't double the "correct" way. I was told to expect to miscarry. Obviously she is here and my numbers didn't follow what the doctors said they "should" do. I continued to test on HPT till my next beta test two days later. Each day was a bit darker. We felt a bit more optomistic. My numbers came back on Thursday at 51. We were happy because they wanted them at least at a 50. HCG (the pregnancy hormone) should double every 2-3 days. Mine did it in 2 days so we felt even more optomistic! Through the weekend I continued to test each morning, and each day they got darker. Saturday morning (yesterday) I took my test and it was ever so slightly lighter than my Friday morning test. I thought that was odd but wasn't too concerned. This morning I took another test and it is even lighter still. It looks just like my first postitive tests looked like. I'm so upset because that usually means that you are losing the pregnancy. I spent a long time reading other people's experiences with this and 9/10 times, they end up having a miscarriage. Tomorrow morning I have another blood draw to see what my numbers are doing. If they are still going up as they are supposed to then that means more than just a line on a test. If it stays the same or goes down, then I am having a miscarriage. Honestly I still 'feel' pregnant. I've got the same symptoms as before. I'm not feeling very positive though. I'm ready to hear bad news. We still have 4 more frozen embryos and I'm sure we will try again. Stay tuned.....