Confused

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 so confused I just read somewhere that after you receive your peak ovulation that the actual ovulation doesn’t occur until 24 to 48 hours later is that true? Because I always thought you were supposed to have sex as soon as you saw your peak ovulation. Yes I know you can still have sex when you see your peak ovulation because sperm can live and you up to five days but is this true?