Confused about period

Megan

My period isn’t quite normal. I’m on birth control and I’ve been on it for over a year. On December 31st my boyfriend and I had protected sex. After sex I realized their was blood on the sheets so I assumed it was my period. Then on January 1st I had bleeding. And the bleeding was on and off until January 8th. Was this my period? Sorry about all the pictures.my period was suppose to start this past week. Could this have been my period?