Regular periods after depo but still no baby?

Since ive gotten off of my one shot of depo ive had normal periods the last four months on the day but still not pregnant. My husband and i have been ttc since i have gotten off the stupid thing but no bfp yet. Does any one have any up lifting info. Maybe something i can do? Ive been off it 10 months 13 months since i got that one and only shot.