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 Let's break this down...
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CD 1Â 9/28
CD 19-22 DTD
CD 24-26 bleeding, spotting, brown
CD 27-32 other pg like symptoms
CD 29 AF due
CD 30 pink spotting
CD 31 HPT- (CBE digi)
CD 32 today
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Do you recall when you had fertile cervical fluid- creamy or eggwhite in consistency? This would help us pinpoint ovulation a bit better. Without charting or more information it is difficult to know when you ovulated. Ovulation can vary quite a bit depending on what is happening in your life. The time between O and AF does not vary by more than 1-2 days typically (this is called your luteal phase). The average length LP is 12-14 days. So if we took your expected AF day of CD 29, then we might guess that your O day was somewhere around CD 15-17. You DTD after this period of time, which then could not result in a pregnancy. Okay, that's scenario one.
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Implantation occurs between 8 and 10 DPO 84% of the time, but can happen as early as 6 DPO or as late as 12 DPO. Implantation bleeding really is not that common, but if we assumed your bleeding, spotting, etc. was from implantation then we would also assume that ovulation occurred between CD 12-18. It is possible that you caught the egg the day after ovulation with your BDing on CD 19. But it combines too unlikely things: catching that egg after O and the earliest implantation possible. But, possible nonetheless. If this was the case and O occurred on CD 18, then you would expect AF about 12-14 days later, which would be CD 30-34. You experienced pink spotting on CD 30, which is not uncommon around the time of expected AF when you're pregnant. However, this would also mean that you tested at 13 DPO, which would likely give you accurate results, especially with such early implantation. The CBE digi I believe only requires an hCG level of 25, which I know there is some controversy with that test. So my first bit of advice to you would be to test again with first of the morning urine with a First Response Early Response test. If that is also a BFN then I would say you are most likely not pregnant.
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You mentioned that your previous period did not seem like a period either, but if you got pregnant last cycle then you would definitely be far enough along to test positive by now.
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Okay, if we took the last day you DTD (CD 19) and said the sperm lasted for up to 5 days, the latest you could O would be CD 24. This lines up with your bleeding. Ovulation bleeding is not common and is usually just a bit of spotting, but for argument's sake, let's say you had some random O bleeding. If you did O on CD 24 that would mean you tested on 7 DPO, which is almost certainly too early to test. If this was the case, then I would suggest waiting at least until 11 DPO to try testing again (that would be Tuesday). And again, get a different test.
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Alternatively, if we considered your bleeding on CD 24-26 to be the start of a new cycle, then it would look like this:
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CD 1Â 10/21
CD 6 pink spotting
CD 7 HPT-
CD 8 today
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This would mean that O was still on it's way. It would also mean that you're experiencing random spotting and irregular cycles. When this is happening it means your hormones are fluctuating quite a bit and this can cause a lot of secondary symptoms that mimic pregnancy symptoms. To help unravel the mystery (if you're not currently pregnant) I highly, highly recommend starting to chart your basal body temperature and cervical fluid. This will allow you to know when you are fertile, when/if you're ovulating, how long your average LP is, when to test, when to expect AF, if you are pregnant, and if there is anything of concern happening with your cycle. If this interests you, please post for more information.
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Good luck and keep us posted!
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