Ovulationg tests positive for a week! Confused!!

Sonia

Hello! I have been taking ovulation test for past 6 days every other day. My ovulation test have been coming positive. Last two are darker. Top one is from today (Darkest). When is my actual ovulation? Soooo confusedddd!!!! Please help. Anyone else going through this? Which day should I think is the LH surge?