Should I be worried

Trisha • I am married and have 3 kids of my own and 6 step kids.

It says I'm 4 days late and I usually have my period close to these days

Sept 10-15

Oct 9-14

And this is November and I haven't started I stopped taking my birth control pills during October I had sex October 18th when I was fertile and and October 21st I was also fertile my partner ejaculated both times I remember having sex on 3 of my fertility days I just can't recall the last one