I think thats right, you got your bloods taken too early anyway normally they wont call in you for the blood test until day 14 which is why i dont get mine until Monday.
When I was pregnant with my daughter, I went in on day 14 ( 11 days after transfer) and my BETA was 167. You are only 8 days after transfer and BETA numbers double every 24-48hrs aprox. So you arent too far behind a nice number in reality. They tell you to come back for another test in two days time because its how the BETA numbers increase which will give the Drs a good indication on the viability of the pregnancy.
In other words its the second and third blood tests which will tell you more xo