Does stress cause a late period?

I have had my period for 9 months now. It has been irregular which is normal. But the last 2 months Jan. And Feb. It started and ended on the same date. I was happy becuz I thought my cycle has become regular, but this month it hasn't started yet so it prob isn't regular yet. But I just hope I don't get it Sat. Becuz I'm makeing Confirmation and I'm wearing a white dress. It prob will knowing on special events it comes.

I don't know when but I started staying up later like I think last Mon. Becuz I'm on my iPhone or iPod, but I have been going to sleep later around 11 or 12. I usually go to bed at 10 becuz of school. I'm waking up later and I fall back to sleep when my alarm rings lol. But my parents get mad becuz I have less time to get ready. Ik i'm addicted to my phone.

Does stress cause period to be late? I'm 14 if that helps or anything and my periods last always 6 days and are mostly heavy which is annoying.
And I just recently in Feb. I started to get a sign of it coming headaches. I have never had any signs what so ever. But i don't know please help. I have been eating normally so it isn't my weight.

Added (1). I forgot to add that I have been worrying a lot over my crush, and my friend who texted a boy in my grade that I fantasize him and I like him, which I don't. And to add to that she was nice to tell my crush over text that I didn't know how to tell him this but I really like him. I don't know what he will say to me and he stares at me a lot, but I'm stressing over a lot of things. The Constitution, my grades, but they are good. What people think of me, what highschool is going to be like. I think what ifs in my head and it causes me to get overwhelmed I'm worrying about things that haven't even happeneded! I don't know what is with me. Just some things that I'm worried about. The worst is I'm getting braces! I'm excited, but deep down I'm nervous. Those might be other things that are causing it to be late. Right?

Most definitely! It happens to everyone, don't worry about it & try not to stress too much it'll come

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