Period 14 days apart

Kat • Mon, Jan 02

Hello,

I am 36 yrs old and my cycles have always come between 28-30 and when they come they usually last for 5 days. My last cycle date was Dec 13(beginning) and went 5 days. 13 days later another cycle has come and it’s like my normal ones. I’m not exactly sure what to think. Any suggestions or thoughts?