Could The Delayed Periods Be Due To Naproxen?

I was put on naproxen for my period pain since it is really bad and I was told to take it a few days before my period was expected. I was then not starting, so I stopped taking it and will take it again when I start my period. I was suppose to start on May 29th and it is now June 3rd. I dont know what to do? Could it be the medicine or is there something wrong? I am always pretty consistent with starting my period on time. I dont know what to do.