Multiple positive OPKs?? So confused

Molly

Has anyone had multiple LH surges? I took an ovulation test on CD 13 and it was like the most positive result I’ve ever had and then I took one today which is CD 18 and this is what I got. I’m so confused. I’ve also attached my BBT chart which I believe shows ovulation in CD 13. My cycles are super regular and last about 26-27 days