TTC after depo, . . Help!!!!

Lea
Took my first depo February 2014 last one was November 2014 , I was suppose to take it again February 2015 but didn't , can anyone help me , I haven't got my period since I first took this shot and ttc but no period
My breat are sore for about 3 weeks now and I get cramps but no period !!! Please help me 😔