Getting pregnant after depo?

I've only gotten one depo shot in my life and it was on February 29th and obviously the shot lasts 3 months and than its done. But it's July now and I've been trying to concieve but nothing yet. During this whole time I've been bleeding constantly, and I even felt like my ovaries were in pain, just irregular bleeding but on the 8th (July 8th) I started taking vitex to help with my irregular bleeding and also to try to concieve. And now I'm not bleeding, which is good right? But anyone know other ways to get pregnant? Will I even be able to? It's been two months off depo and I still haven't gotten pregnant and it really discourages me.. It's hard..