Ever had BBT charts this different?

Sal • One 💙, one 👼🏻, one 🌈 🎀, by ovulation induction after 2 failed IVF cycles 🤯 | Hypothyroidism & lean pcos 🤨

Hi all - my second cycle charting and my post -O temps look SO different from last cycle. See chart below - purple is this cycle and green is last, charts are overlaid at their coverlines. I am worried I am broken this cycle or something because my temps are so much lower, please let me know if this happens to you :) thanks!