Just found this website which could give those people who are late for AF and still getting BFN's some pretty useful info, or is even just pretty interesting if you are at the end of 2ww and wondering when to test!
Interestingly enough, it shows that some woman have been 18DPO before their HCG levels (through a Beta) have been high to register on a 10mui test even, although to be fair most do get higher quicker than that!
Interestingly it also shows it for twin/triplet pregnancies and you can click on the DPO's and get a breakdown of whose tests were at what levels on those days and change the age ranges around to get a direct comparison with your own age!
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