can stress cause a skipped period??

Katie • Katie
My period is usually right in track, and Husband and I have been ttc for a number of years and recently did 4 rounds of Clomid that ended 2 months ago.  I haven’t taken a test this month (I’m kind of over trying and being discouraged) plus we only had sex once this past month.  
Last week I was incredibly stressed at work and wonder if that is why I may have skipped this period.  Has this happened to anyone?