Irregular Periods?

Kaitlyn • 20

So the past year and a half my periods have been way different than they were before. Summer of '17 I didn't have my period (for nearly 5 months), or any spotting. I assumed it was stress because of moving houses, but I had learned we were moving 2 months after it had stopped. From then on it's been either 5 or so days early or nearly a week late... I'm thinking it's either my anemia or my age (14), but are there any other things I should watch for as a just in case?