Ovulation &' Conception

I'm Sorry If This Is A Dumb Question, But Its Been On My Mind... So I Did An opk On October 29th &' It Was Positive, But I Didn't Have Sex That Day, We Did Two Days Later. However, It Says On Here &' My Research That I Ovulated On The 28th... But We Only Had Sex The 24th - 26th Of October &' The 31st &' Also The 1st, 2nd &' 6th Of November... My Due Date Is July 21st... Last Period Was October 14th... I Just Wanna Know Can You Get Pregnant After Ovulation? I Thought You Couldn't... &' Exactly When Did I Conceive?