What Could Increased Appetite And Pink Vaginal Discharge After Stopping Depo Indicate?

hi doctor, im 19 yrs old soon to be 20. ive been on the pill on and off the last 3 yrs and decided to go onto the depo injection which i only ended up having one shot because it wasnt til after i read all stories about how it could affect not conceiving for years. i am now ready to get pregnant but after having come off the depo three moths later i had my period for a week and then come off for a week and then come bk on this has happened three times now.. atm i am not bleeding but i am feeling dizzyness daily and always hungry and i also have thick white pinky dischage :S what could this mean?