Help please, ovulation already?

Madison • TTC #2, mommy to a sweet boy 💙

Hi guys, I took letrozole 5 mg for the first time. I took it days 3-7, and here I am on calendar day 9 and get this positive Lh test already??? I had cramping last night, and I decided to start testing ovulation for this cycle. I’m just confused on how I could ovulate so soon. Please give me your input!!