Stressed!

If you are stressed out during the time that you are supposed to ovulate and had unprotected sex with ejaculation would this be a factor of not getting pregnant. It has only been since Sunday and I am super antsy and wondering what is going on. I won't know until the beginning of January, but who knows I may have not even ovulated yet as today is my last day in the red. Does stress do anything besides delay ovulation? Stupid question, but can it do anything to the sperm from being so stressed wondering if it became fertilized or not?