Early ovulation

Just wanted to input

I’ve had pretty normal cycles for the last few years. This month though I think I ovulated much earlier than normal. Based off my CM, I believe I ovulated on day nine of my cycle. Is this even possible? I always ovulate of day 14.

So basically is this even possible to ovulate this early? And why would my ovulation date be thrown off? Should I expect an earlier period?

Thanks ladies!