i have been on depo for a year. my last shot was due april 7, 2011 but i didnt get it. on june 29, 2011 i started bleeding but for only three days. i stopped on july 2,2011. i had sex on the third and fourth. now i have lots of white discharge coming out of me. what does it means. i am 26 yrs old. i already have a boy his 8. i do want another boy, please help thanks