Hello i recently was on depo just for 3 months when i was due for second shot in september i didnt get it i missed a period in october then november my period started off dark dark brown red blood and got a lil redder but watery like it lasted for 12 days then stop dec i had brownish red discharge for 5 like a period then went away i start bc pills but only took 4 and realized i took the wrong days and stopped instead of the normal blood flow your suppose to have i have this brown discharge once again and no im not pregnant so is this an effect from depo or something else