There are some pregnancy tests on the market, that claim that they can tell if you are pregnant four days before your period is due.
That means I could start testing tomorrow.
Except then you read the small print, the accuracy of the test is as follows:
53% of pregnant women who test four days before their period is due get an accurate result
74% three days before
84% two days before
87% one day before
99% on the day
Or to put it another way 46% of pregnant woman will receive a negative test if they take the test four days before they are due. Then (and note this is PREGNANT women), the percentage that will get a false negative on subsequent days will be: 26%, 16%, 13%, 1%.
I currently have a brace of those tests in my bathroom cabinet and I am not going to use them to test early.
This is why:
1) If I get a negative result I will waver between, being really upset to consoling myself that I am in that percentage of women who simply don't get a positive this early. So I would have to test again anyway
2) I have a christening to attend on Saturday. I would rather attend a child-centric event like that in blissful ignorance rather than knowing (or thinking I know), I am not pregnant.
3) Until I take that test I can believe anything. I can keep the anticipation in the same way I like to open presents, agonisingly slowly.
4) I'm scared of what the test might show.