Even though I don't know you, I am so sorry for your loss. I can tell you deeply loved your mother, and it is going to take a while for you to mourn her passing...and that is perfectly okay. In fact, it is normal. Even if you mourn for years, that's okay too. It is the way God designed us to help deal with tragic loss. Just because your mother's body died, her spirit lives on, forever. And so does yours. So continue to talk to her. Tell her how much you miss her. Tell her how much you love her. Remind her of funny events from the past. It's okay to re-live them with her. That is all normal and cathartic. It will help you begin to deal with her passing.
Over time, you may find it helpful to talk to a pastor or a counselor. They are really good about allowing you to grieve because they know you need to do it. You'll know when you are ready to talk to someone. You just will.