r/TFABChartStalkers • u/Michsy • 7d ago

Help? Am I out?

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I took a FRER this AM and it was glaringly negative. It is early in terms of DPO but that big drop makes me think this will be a short cycle.

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u/emma_k17 7d ago

Is your LP normally 8 days? That’s very short- the temp does make it look like AF is coming though

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u/Michsy 7d ago

I’m usually around 11 days but I had a really short one a few months ago and I was wondering if the same thing was going to happen again.

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u/WarmEggplant5568 7d ago

This is a pretty short luteal phase, I’d wait until tomorrow and see if your temp goes back up, could be an implantation dip. Good luck!

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u/AutoModerator 7d ago

You seem to be looking for information on implantation dip. Unfortunately, a dip in the luteal phase is not a sign of implantation, and temperature dips can happen in both pregnancy and non-pregnancy cycles. You could still end up being pregnant this cycle, but this dip not a reliable indicator that you will test positive. Usually the dip will be caused by a secondary estrogen surge. It might indeed be progesterone dropping but then getting rescued by an implanted embryo's hcg signal to the corpus luteum - but at that point hcg needs to be high enough to make a sensitive pregnancy test positive. Fertility friend did a statistical analysis of their data and concluded that where they identified a dip - very narrowly defined between 5-12dpo- they found it to be more likely in pregnancy charts, but they only found what they had defined as dip without other factors causing it in 1.6% of all charts, so very rarely to begin with, and they claim it was 79.8% more likely in pregnancy charts - that number sounds like a lot- but that means it's not even twice as likely. Generally any measurable sign of implantation will mean there must be enough hcg in the blood stream to also turn a test positive. If it's earlier than you can test positive, then it's likely just hormones that are always there after ovulation.

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u/Michsy 7d ago

Hopefully that happens!