I need advice!!!!

I had sex on April 21st, male ejaculation occurred. Had a period the week of April 28th, didn’t have sex again until “ovulation” week on May 12 (had sex all week) Got 3 positive pregnancy tests today, is it possible that I got pregnant the 21st or I got pregnant during my “ovulation” week and I’m just getting positive tests very early????! Note ovulation was predicated by Glow!