Period Worries

Hunter-Skye
According to <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">eve</a> I am now two weeks late. I am normally regular and should have had my period. I have the symptoms of pms but I'm not getting my period. A couple weeks ago I got the second Gardasil shot. I haven't had sex since my last period. Should I be worried anyways that this shot could possibly be making me sick? It's highly unusual for it to be late but maybe I'm causing it's delay by worrying so much. Any thoughts or advice?