Can taking bbt 30mins later than usual affect the reading a little?

Eva_f 🌿 • 🤰🏻bb#1 • Endometriosis warrior🎗
bbt 30mins later than usual affect the reading a little?" />

Been noticing all three mornings of my follicular phase this cycle that I have taken my bbt at 8am instead of 7.30am my readings have been slightly raised, causing a zigzag pattern. Is this my actual bbt pattern or is the 30mins making a difference?

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