Stressed. Where's my period

So I've been back in the states from Japan for about barely 2 and a half weeks. My last period was July 18-22 and it is no where to be found 😐 Since being back I never got proper rest, the day after I arrived for a week straight I was up at 7:30 doing things til 4 pm and not sleeping til late so obviously my jet lag is probably whack as hell. And now I have a uti or a yeast infection which I also feel like is delaying my period. I've also been taking azo pills for help but it's barely helped. Today I started to feel a little bit of cramps but no period. Thoughts?