Why am i not pregnant.

Tanner
Me and my husband have officially been trying for a year to conceive. My period was late this month but then showed its face on Christmas, I got my hopes up and ended up ruining my Christmas and balling all night. I was on depo for 3 years and took my last shot November of last year. I know it takes a long time for someone to get pregnant after depo. But I have done everything I can and its doing nothing but BFN every month and crying myself to sleep. Anyone have any tips? I currently don't have insurance due to switching jobs so going to get checked isn't a option right now.