Clear Blue Advance Digital Test

Hopeful

Hi Ladies ... Tonight I got the non flashing smiling face from Clear Blue Easy Advanced digital. It was blinking this morning now it’s not... I want to clarify that I should be ovulating between now and the next 48 hours ... correct ? If I’m ovulating now , I have been missing my ovulation date big time. I started spotting on August 13th and didn’t see a full blown period until August 16th. If I start counting from August 16th that means I’m starting to ovulate between day 10& 13 correct ? Or should I use August 13th?