8dpo letrozole 7.5mg and trigger shot

This cycle marks my 3rd letrozole with trigger shot. During my mid cycle scan I had a 21mm follicle on my right side (tubeless) and a 14mm on my left. I started testing out my trigger shot yesterday and to my surprise this mornings FMU test was darker than yesterday’s FMU test instead of fading. Any insight on my chart? Praying for a miracle 🤞🏻I have tested out my trigger the last two cycles and haven’t gotten one that dark, it usually fades a lot by this day.