Ghost Period???

So I started a new job as a waitress in May and things have been going great, other than the fact I haven't gotten my period since then(?) I was supposed to get it 20 days ago (June 16th) but I haven't had any PMS symptoms at all. There's also no possible way I could be pregnant (#virgin_alert lol)

Idk if I'm syncing up with the other ladies in my workplace or if the food there is causing it.