Fluoxetine review or any other type of anxiety/depression medication!

I'm asking this because I got prescribed fluoxetine for my anxiety but I have been becoming depressed lately. I'm happy and I think of my past then I'm angry and upset. I've had a lot of things stress me out and most of them are small petty things. I'm angry, upset, happy and I'm stressed and irritated. How has anxiety medication helped you and what difference could I see in my life with the help of medication?