Marathon and Ovulation

Hello! I am new… to Reddit! Came here for insight…My husband and I plan to TTC starting at the end of this month (so you can imagine how hyper fixated I am on my cycle). However, I didn’t ovulate properly (?..just super low LH) this month. I ran a marathon on October 4th, but had super light mileage leading up to it due to tapering. Could the marathon on its own be enough to disrupt my ovulation?