Early ovulation?

I took an ovulation test tonight which would be day 9 of my cycle. I always start testing early just because I don’t want to miss my window. Glow said I wasn’t even in my fertile window yet and the test came back positive for peak fertility. I use clear blue advanced tests so there is no chance of miss reading. I’m on my 4th round of clomid and second at 100 mg. I’ve been getting positive tests the last several months but this is the first one so early. Could I just be ovulating early and missing it? Anyone have any insight?