I am 7 weeks, 3 days, with a fetal age of 6 weeks counting from my last monthly period (1.16.2015). I got a BFP on 2.18.2015. I had a dating ultrasound at 5 weeks (2.26.2015) due to irregular cycles. Nothing could be seen except a small gestational sac, so I had my betas tested the next day. They were 2993. I had another ultrasound last week on March 6, 2015 and nothing could be seen except the sac, so I had my betas drawn the same day. A week later, they were at 9900. I went in today to have my betas checked again and meet with my OB for the first time. She said that based on only seeing the sac, they believed I was having an anembryonic pregnancy and explained my options, but said she wouldn't make a definitive diagnosis at this time. She said she believed it would be likely unless my betas were at least 15,000. After my appointment my betas came back and were 16900, so not quite doubling from Friday, but still increasing quite a bit. I have a tipped uterus and am wondering if that is causing the problems in detecting anything.
I have another ultrasound and appointment next week Wednesday. This website has given me a lot of hope and most importantly, helped me feel not so alone.