Stressed out

Nicole
Hi everyone, 
So i came off depo injections in October 2015 to try get periods back as me and my fiance wanted to start trying for a family, once i stopped i started bleeding in feb/march and have been very irregular since. 
Doctor put me on tablets to stop the bleeding and now i have finished them and bleeding again!! 
Its very frustrating and worrying, 
Will i ever go back to normal ?? How long will it take?