I don't think it necessarily means that you're out. I've seen charts where there's a pretty noticeable dip after OV and the results can still mean a BFP. If the temp dips down just for the day and then go back up the next, that's a good sign. But if it continues to stay down, then I'm sure you know that this usually means AF will rear her ugly head. Good luck!
If its the day before or day you expect AF then it it is almost always a sign that AF is on her witchy way. If before that it doesn't often mean too much. Temp drops in general can be random temp fluctuations, mid tww estrogen surges (very common), "implantation dips", and other thing. Whether its below the coverline doesn't make a great deal of difference - the coverline does not have any physiological significance, but is more like a helpful tool to distinguish between pre- and post-ov temps.
How many DPO are you? If you are close to AF and your temperatures go down, then you will get your period. If in the middle of your luteal phase your temperature goes way down and then back up and higher then the previous temps after ovulation, then that's a sign of implantation.
Location: I am currently living in north carolina, but i am originally form las vegas.
Can I join in here? I had the same thing happen. My temp dipped below my coverline for 2 days then shot back up higher than before... but the first day it dropped I started spotting to what is now what I thought was a light ad. But like I sad temps we're down for 2 days then way up?
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