I am 5 days late. have not had sex but have been under a lot of family stress due to my nana being in the hospital could i be late because of that?

It's possible.: Many factors can change a woman's cycle. Stress, significant weight loss or gain, a cycle where your ovary does not release an egg normally, or pregnancy can all cause delayed or absent periods. If your cycles do not return to normal in 2-3 months, and you have a negative pregnancy test, please see your primary doctor or ob/gyn for further evaluation.