Early ovulation?

Em • Wed, Aug 21

I’m only on CD8 and my opk is already getting dark. Do you think I’ll be getting a peak in the next few days? If so, isn’t that super early to ovulate? I normally ovulate around CD15, last month i ovulated on CD13 and I’m wondering if I’ll be even earlier now....I started taking CoQ10 a few months back. Could that be affecting it?!