A Clearblue brand name test would work at this stage, probably but they are the most expensive and I can't afford it this week as I'm in my overdraft.
Cheaper tests won't pick it up - you have to have at least 10 miu of HCG in the urine and at this early stage I doubt the count would be that high.
In my last pregnancy, I tested positive on Clearblue with only 3 miu (according to my blood tests) and the nurse said she didn't have a clue how the test picked it up so early because I was only about 2 weeks at the time.
However, I can't afford Clearblue at this time and all other tests (going by past experience) don't work until I am at least 2 weeks late for my period. I have to wait a few more days at least.
A blood test would pick it up but I don't want to tell the dr yet and we don't get antenatal care in the UK until 10 weeks gestation anyway.