Is this normal?

So I usually get my period at the end of the month. But 2 months ago I took a plan b and I ended up getting 2 in one month which okay it wouldn’t be the first time (plan b will usually trigger another period for me even if I had one for the month) but it changed and then I got it for 2 months at the start of the month. However this month I’m late (not pregnant) but late. I have been mildly stressed but my stress has never caused me to miss one in like the past 7 years. I had symptoms for like 2 days then it just disappeared. So my actual question is: is it possible that my body could just be realigning and ill will get it at the end of the month? Or has anyone else had this issue?