Help me understand please

Sarah • 💑 💍 to my best friend, We have a beautiful 3 yr old boy 3/21/16 👦 and, a baby girl 👧 born 1/29/19 and just found out I’m pregnant with #3 due September 2020 This will be our last one 👶 🍼

I’m bad at reading these and I know I skipped a couple of days but did I ovulate on Jan 1st? Or 2nd? Also my peak LH was on Dec 30 & Dec 31st. Thanks so much for any help!