LH surge before period

Gabrielle

Hey ladies. How many days before period does your Lh surge? Mine is very negative. Due in 1 day. Temp rose today. Still bfn.

I looked back at LH chart and I got a surge 2 days before last couple months.

Any insight.

No signs of period or pregnancy.

Posting chart comparison. Purple is this month.

If period was coming then estrogen would cause temp to go down right?

Thoughts?

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