My dates were wrong apparently

April • Baby #4 Is a Boy 💙 , due date November 15, 2019 🤰🏻

Just had my very regular period On September 5 it comes Almost always on the fifth every month. Well today I noticed egg white discharge so I said what the heck let me take a opk test.... well blazing positive on 2 test .. did I miss my

Chance ? Is it too late ? We BD every other day last week but havent the last few days because I thought i was in my tww 😡