Confused

So my cycals are irregular and have been since i was 18 well me n bf have been ttc #2 for me n his first for little over a year and I gave up in December well glow says I ovulated 9th Jan and I had a been really spooty so I took a test on the 12th Jan I know to early to test but it come up positive so my question is when do u guys think I ovulated as I know earliest you can test is 12-14 dpo