Problems with deposhot?

Parrish • 20 years old, cake decorator at Baskin Robbins ice cream shop depo shot Jan. 2016. Don`t plan on having babies right yet
You'd think with the depo shot I wouldn't have my period for this long at a time. I had my second shot April 25, 2016 and my next one isn't until July 18, 2016. I finally almost went month without a period and then started again. It's light but it won't go away. Any suggestions?