Extreme fitness and my period

I play basketball for a competitive league that travels the month of July. It's a very schedule, we sometimes play 6 games a day. So far I've played about 20 full length fully regulated games in a span of two weeks. I was supposed to get my period two weeks ago at the beginning of this trip but it has not arrived yet. I have gotten my period twice since the last time I was sexually active and it was right on time as expected. Do you think the exteme spike in fitness has anything to do with this missing period??