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Conception

When's the best time to get pregnant? Use our interactive ovulation calculator to work out when you're most fertile and most likely to conceive.

Breastfeeding, bad sleep and its effects on BBT

2 replies

Neja · 18/07/2025 21:30

I’ve always co-slept and breastfed back to sleep my baby. My baby is now 2 1/2 sleeps in his own cot til 1am, but then I bring him to bed with me co sleep and fed back to sleep on and off til morning.

We would like to try for another in next couple of months, and decided to start charting, and tracking my bbt again.

Every month the temperature is all over the place. Starts low once monthly flower starts, then goes right up, then low and up again. I can see a shift when ovulation happens but the chart looks nothing like before i got pregnant with youngest where it was very low in follicular phase, then short up in luteal phase. Not only that but luteal phase now is 9-10 days long.

Now im worried if I even am ovulating. Im trying to completely wean toddler off boob, and desperately would like him to sleep through, but he screams murder for boob at night.

Is the bad sleep with toddler contributing to temperature being up, and down in follicular phase? Or is it a sign of bad egg quality? Has anyone successful conceived with high temperatures in follicular phase?

OP posts:
EmPeEf · 19/07/2025 03:17

No experience trying to track BBT whilst nursing, but I also fed my toddlers back to sleep so understand the convenience and lifestyle choice, and I am currently taking my BBT with bad sleep patterns.

What I would suggest would be to maybe have two apps that can track it, and on one record your temp at exactly the same time of day every day, regardless of what you’re doing, and on the other record it after your longest (predicted) stretch of sleep in a 24 hour period. For me currently that means logging at 3pm before the school run (though that’s going to change come school holidays!)

Perhaps having two on the go might help you gauge some sort of pattern between them? Because it’s so hard to know if temping at a particular time of day is working, especially if you can’t be consistent.

Fizxy · 19/07/2025 19:53

I used to bbt and I’m sure I remember that any disturbances during the night could interfere with your temp and it would suggest discarding a temp if you’d had a disrupted sleep (I think). Breastfeeding has an impact on your hormones too so it could be that which is also impacting on your temps. Your luteal phase isn’t too much of an issue I don’t think. I’ve always had a 9-10 day luteal phase and had 4 pregnancies (2 successful) and 1 pregnancy did happen whilst I was still breastfeeding despite my cycles being all over the place

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