TTC after Depo

Hey everyone! I was on the depo shot for about 4 years. My fiance and I have been trying to conceive a little over a year now and have had no luck :( I went awhile without a period until last October they started coming every month. Then last month I didn't have one and we haven't had any positive tests. So ladies tell me your story! What problems have you had coming off the depo? Have you been successful with ttc? And if so how long did it take you? I wanna know everything!