Emotional during FW

So I have like three or four different fertility apps running on my phone, the general consensus is that I should be about a day or two away from ovulation. Why in the hell am I so emotional? I am NEVER one to be teary or   let my emotions get the best of me. Today has been an absolute wreck. Talking to my husband, I was like " I feel like I'm over complicating this with all of the apps and charting, it's stressful. Also, I started crying because I didn't want to become "the sexy time schedule keeper and make this a chore".