Can you miss a period due to stress?

YES! Stress can cause it to be late, or for your body to skip it all together. Every time I move, go on vacation, have a fight with my husband..etc, it ends up being late! it's very annoying, and I'm always freaking out that I'm pregnant, which causes me MORE stress! LOL! Don't worry about it, when things calm down, your body will return to it's normal cycle. If it doesn't, go see a Doc, it may be something else altogether, and it's a good idea to see your gyno and maybe discuss some form of reliable birth control.