Late period

My period is always on time and I haven’t had sex since February but my period is 5 days late. I don’t know why it would be late I did start a depression medicine and tomorrow will make a week since I started it. The doctor didn’t say that it would mess me period up so I don’t know if it is from that or what.. it’s called Trintellix I have tried looking it up on google but it doesn’t say it can bother your period. Does anyone know if that is what is causing it??