False LH surge?

I began taking clomid on the 3rd day of my cycle. I was supposed to take 5 pills even after my period stopped. The day after my period (CD6 4th pill) I took a ovulation test because I think I ovulate before glow says so I was gonna test every day until my fertile window was over. The test had a vvvfl. On CD7 & 8 I got another vvfl. Today is CD 12 and the OPKS have been negative every day since day 8.

Has anyone else takin clomid and gotten a LH surge on a opk? I don't think the opk was positive because the line was vvf and not the same or darker. Do you think it was the clomid or mabey it was a poitive opk?