Birth control shot and period

So ladies i need your help and opinion. I was on birth control for 3 months on the shot. Didn't get my 3rd shot in September. I came on as u can see at the end of October and now I'm on again. WTF is going on with my body. I'm getting so damn mad and more frustrated because I'm bleeding again right now and I just stopped spotting last weekend. Need your help ladies