Okay question

Step mom to be • I'm a young soon to be step mom and I absolutely love my fiancé and his beautiful little girl :)
I wasn't supposed too start my period for 11 more days I woke up this morning and I was bleeding. My stomach has been cramping and hurting all day. I bled for half the day and then bam nothing. It's was just spotting it was straight blood. Is this strange??