Ovulation after period

Hey guys my cycle started 05-22-2015 ended on 05-28-2015 its 28days and last for 7days and glow was very accurate on my cycle now ovulation its sayd on glow the green days starting from the 31-6 is my fertile time so i counted 14 days from the day my period start to see when im going to ovulate is landed on one of my fertile days which is the 4th of june which was the highest percentage of 33% feryility is that my ovulation day im confused