New here and not really understanding

Jessica • I`m 24 ill be 25 on November 17th I`m married with a soon to be 3 yr old it took us 3-4 yrs to have our son and we want to hsve another baby soon.
New to this site and don't know much about this. Is it best to mske sure to have sex on your highest day to conceive or all the green day's. I have a soon to be 3 yr old so nm mommy daddy time lol trying for baby #2