Late Period

In March I had a super important interview that stressed me out to the max. I had just gotten off of my period 2 days prior to the interview. On the day of the interview, my period started and lasted another 4 days (I'm guessing it was stress related). In April, my period came as predicted and was normal. As of today, I am one week late on my period for the month of May. I have all the symptoms of my regular period (acne, cramps, moodiness, discharge) but I'm still not bleeding. I feel like I'm stressing myself out more than I should. Should I be worried or is it my body adjusting from that weird period in March?