Need advice?

i am feeling very low, been ttc since april 07 with no avail. I am post depo since april 07 and had one small bleed in Nov. All ovulation sticks are neg i even have the clear blue fertility monitor and it is consistantly low. my gp says its just the depo waring off, i know this and i know it can take up to 2 years to get out of my system, but i need to get pregnant, im desparate! Is there anything i can do or take to help me get my periods back or make me ovulate? what should i say to my doctor??