pregnant after vasectomy???

Well my husband had one a year ago and we did the testing and in the first test we were told there was very little live sperm but there was some and we never got the results from his other one but now my period is late and for the last year or more I've had very on time period and when I told my husband he straight up asked me "Who's the father!!" 😡😡😡😡 I was like are you fucking kidding me then he went and called me his sister-in -laws name cuz his brother wife got knocked up 3 years after he had one and just finally admitted(9 years later) that she cheated. I told him he's sleeping on the couch tonight for that comment.
And I never wanted him to have a vasectomy in he first place I wanted that option open more 1 more kid but my opinion didn't matter.