An alarm I didn't set on my iPhone went off

Hello,

i was just sleeping as suddenly my phone alarm went off, it’s usually an alarm i use for school and i only set it manually before school nights. It’s sunday, and my alarm went off but i didn’t turn it on to be set? Is there a way to fix this or is it just a bug? I’m currently running on ios 17.3.1.

thank you in advance!

[Re-Titled by Moderator]