Why does my anxiety spike right before my period?

Name: Priya Das

Date of Birth: 23rd October 1998

Time of Birth: 8:20 PM

Place of Birth: Mumbai, India

So, a week before my period, I become very unusually unstable. Like I get anxious, I get emotional for no other reason, I feel like everything is going to break down, I cry like every 10 minutes, even I get angry like every 10 minutes. Like everything feels so heavy than the rest of the month. It's just a week before my period. Is this purely hormonal or is there something in my chat that tells me that these patterns are connected to any moon phases or cycles?