Just don't know what to do

I been with my husband for about 5 years and the first year I did the depo shot but got off it when the year ended and my husband has been taking care of me but we started to talk and we want to have a baby so we started on April of 2015 but I can't get pregnant I went to the Doctures and they say I'm fine that I don't have to worry because I'm young that I'm only 20 and his only 22 so there no problem that I should just wait but I don't know what to do any more because it a year already and nothing . What should I do ?