So I got some very clear BFP's 10 DPO in the morning, by 11 DPO my Internet cheapie tests were looking negative. That was three days ago now, I'm due on today and nothing. Not so much as spotting which I usually have a few days before. I've done a couple of tests these last 24 hours just to make sure I'm out and they all have super faint lines on them! I'm aware this is a chemical, but when will I bleed? All my tests are super sensitive, could I still be producing tiny amount of HGC? TIA