How many days before AF is due are you going to test?
I normally started testing around 11 DPO, but I had my first RE appointment and decided to test just in case. Well, at 9 DPO I got a very faint pos. My beta numbers came back at 12.5, and anything over 8 they counted as pos. Every doc has a different magic number they want the first beta to be.
I recomend using the internet cheapies from amazon, they seem to be as sensitive at the expensive ones and your don't feel bad about wasting a test. These are the ones I used: http://www.amazon.com/Step-Pregnancy-Test-Strip-pack/dp/B003APW8XY/ref=sr_1_14?s=hpc&ie=UTF8&qid=1344031134&sr=1-14
Well AF is due next Wednesday or Thursday and I'm traveling till late Monday night. So I guess Tuesday if I don't feel like she is on her way.
I really just want to test every single day till I get that darn BFP!