somebody help with ovulation pleasee

hi i was on depo injection from January 17 and had last one in Sept which ran out 1st week of December i had lots of bleeding first off but past few months had regular periods lasting 6 days with cycles around 24-30 days max. i get ewcm but ovulation tests never get dark they start of light then get darker and go back light do you think i am missing surge or not ovulating i do them a few times a day.m