No reason to hang your head in shame! I don't think you need to feel like you have to answer other people's questions in order to ask your own... just ask away! 
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Well, your situation is a bit puzzling. Taking a look at your chart, O is not extremely obvious. You do appear to have a set of lower temps and higher temps, but you also have some dips well below the cover line. O pains can happen before, the day of, or after ovulation so often it is difficult to rely on those alone. Your CF and CP were definitely the most fertile around CD 15 and 16, but you also did not consistently log CF or CP observations over the next week.  I see that you had some creamy on CD 19... this could have been another patch of fertile CF, possibly pointing to a different O day. Notice the temp dip on CD 20. Certainly this could have been a dip b/c of a mini surge of estrogen, which also caused that day of creamy. But it could be your O day. But even if you did O on CD 20 you'd be 19 DPO today and that would still indicate pregnancy.Â
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I see you tested on 11, 14 and 17 DPO. The first two could have been too early, but the test on 17 DPO should be accurate for most women. If you didn't O until CD 20 then you tested on 6, 9, and 12 DPO. All of which could be too early. So my advice is to definitely POAS again. Go get a two pack of a sensitive test like First Response Early Response or a dollar store/generic drug store test that only requires an hCG level of 25. Test today after holding your urine for as long as you can. If you get a BFN or a squinter, then test again tomorrow with FMU.Â
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Late implantation (around 12 DPO) will lead to a later BFP. Also, embryos produce hCG at different rates so it can take longer for the level to rise. Also some women do not metabolize hCG into their urine as quickly as others and this will also lead to later BFP's or "failing" HPT's.Â
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Lastly, if you are not pregnant, a corpus luteum cyst could explain your continued high temperatures. This type of cyst is not common, but it is thought to happen to every woman at some point in her menstruating career. It is benign and usually resolves on its own within a few weeks at which point your temps will drop and you will bleed. An u/s or sometimes external palpation can determine if you have a cyst.
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Good luck and keep us updated!