True or false information

Court

My newly husband and I are trying for a baby!!! We got married in Tennessee and we will be here until Friday the 13th 🙈I was told from some people back home (Louisiana) that my period will be delayed bc of the altitude. I am supposed to start on Saturday the 14th is that true information or false? Should I test Sunday if my period doesn’t come?

Thank you for your help!!! 😬