Implantation bleeding or just spotting ?

My last period was sept 30 - oct 4th . It was late for about 12 days thought might be pregnant took a pregnancy test and negative . 4 days ago i started spotting first light pink now brownish / pink , light cramps in lower abdomen , increased apetite and i feel tired all the time, i have been feeling no desire to have sex whatsoever i prefer to sleep lol. Acording to the app im ovulating today , i have never spotted during ovulation , my next period isnt due until nov 2nd , i think it might be too early for implantation bleeding but too early for period too, sorry for tmi pic, has anyone experienced this ?