BFP confirmed twice after having baby boy 4 1/2 month ago

I'm still shocked about the news I'm trying to take it all in No way am I getting an abortion neither nor am I doing adoption. I still don't know how it happened we used protection and when did it happen because I really think my ovulation came late. I guess I'm going to embrace this pregnancy like my first two pregnancies and hope for a girl so I can get my tubes tied. Other than that I guess sooner or later I'll soak it all in and be happy until then I'll live out my shocked moment. But I will continue to do what I have to do as a mother I know things happen this just caught me off guard. Makes me wonder has this ever happen to anyone