Help! Idk why this happened

Shynese
On May 13 I started taking birth control the pill. May 28 I got my period but I didn't get to the period part of my pill. First it was spotting and then it was heavy....not too heavy. FOR 8 DAYS!!! I usually have it for 2-3 days. The longest I have ever had my period. Then 5 days go by and I'm on it again... This time I stop my birth control.. Have this happen to u? Should I be scared?