Stop in for a cup of coffee

I never got any Ill effects from all three shots, other than a slightly sore arm. Now I'm beginning to wonder if I am non symptomatic. I was with my Church bud Steve last Tuesday. Same day I went for 2 covid tests. Two days ago he felt Ill and tested positive yesterday. You all think there's chance that I have antibodies ? Possibly I got it before my first Covid Vaccination? Both tests last Tuesday were negative. and I feel fine. But must go test again today since the flight has changed. Any opinions here? I dont research much...