Question About Cycle Length

Carly
My periods usually came on a regular basis: every 22 days, lasting for about 2 days. 
Starting 2 months ago, my period has been coming every 27 days and lasting about 2 days... This is a whole 5 day difference so I'm confused.
 
I recently lost 12 pounds gradually in the past 6 months. I don't think that would lengthen my cycle but I want to hear from anyone who has experienced this or anyone knowledgable to what's going on!! Thanks for the feedback.