I had what I believe to be implantation bleeding this morning.. I had it with my first DC but at the time I thought it was just an early period and swanned off on holiday without a second thought for the two weeks following!
According to my app (although I'm not very regular) I and not due on until next Friday but I was wondering when you think I could test and it be half accurate? 
I've got a couple tesco tests and I've got two FRER due to be delivered Monday (so would miss FMU)
I think I should be 7/8DPO today...