Irregular cycles need help

Hi everyone,

I'm TTC #1 and am on cycle day 28 and having flashing smiley faces on ovulation test for 8 days now, felt sore breasts and nauseous and slight heart racing a little bit yest and a good bit today but can't tell when I ovulate exactly as cycles are all over the place as you can see below. I've done a pregnancy test and said negative so what could be happening ? Has anybody else experienced this or shed some light please ???