Irregular Periods

Help! I’ve had a regular cycle for years, and just this year my periods have been out of wack- 10-16 days late every time!

Is this something I should be concerned about? Health wise I don’t feel different, except my pms feels like it’s longer because of my late start dates.

I’m not on birth control but maybe I should look into them for this? But I also don’t know if it’s worth putting myself on hormones (which I react terribly to) if there’s nothing wrong with have irregular periods?

My diet hasn’t really changed although I am thinner now than I was last year- but it’s only about a 5 pound difference if that so idk! Neither have my workout habits/sleep/stress?

How have you ladies dealt with irregular periods?