Anyone else ever had this happen? What could cause this?

Normally my cycles are pretty regular, always 36-38 days long and my period is 5-7 days long. Well this cycle was 53 days long, my last period was in September, I didn’t get a period at all in October, but finally started on the 14th of this month so 3 days ago. I’ve already stopped bleeding and am just having some orange colored discharge. Why was my cycle randomly so long and my period so short? I’m not on birth control and haven’t been for 7 months, this is the first time this has happened.