PERIOD LASTED 1 DAY

So...My AF usually last 5 days. I have a 28 day cycle. I started my period 7/12. It begin lite and the next day nothing. Through 13-16 I had no period. This has never happened to me before. I don't feel any pregnancy symptoms but decided to test anyway it was negative. I had my Mirena removed 6/28 and had a period 2 days after that lasted maybe a week on and off. I thought my cycle would be back on track now. Considering I got my AF while on Mirena. Has this happened to anyone else?