UPDATE!
Still no AF and no major symptoms, only feeling sick in the morning and a bit of dizziness, but I suffer with BPPV (Vertigo disorder) anyway, so I am chuffed in one way, because in all these 10 years since having starting my periods I have never missed one or come on late!
Can't wait until Monday when I go doctors, to see if I am or not. Re-tested this morning and till a BFN!
Donna x