Check the sensitivity of your test. The
box should either say how soon you can use
it (first response - 3 days before period
is due) or it will have something like
50iu/l or 20iu/l (international units per
litre) the lower this number - the more
sensitive your test is.
I'm 6w+2 and still find it hard to believe
so I did my own little experiment the
other day with a first response test.
I dabbed on test into my urine but not
enough to properly wet the tip (this was
an accident on my part

)
and decided it was a "wasted" test so I
dipped it in some tap water - to help the
urine along the stick, but I also did a
control and dipped the other (2 in a box)
in just tap water.
The one with a teeny tiny bit of wee(and
water) gave a positive while the water
only gave a negative (thank goodness

)
give it a few days and then test again -
you may find it easier to "catch" your wee
in a clean container and dip the test into
this instead of trying to hold it in your
"stream" - especially if you are a larger
lady like one-self :d