Actually, I discovered the solution. My mouse's back button was stuck, good thing I'm getting a new one hahaha.
Ha ha ha, that is funny. Im glad you have found the answer to your issue and that you came back and reported the findings. What mouse are you getting, I personally have my eye on the M.M.O. 7, I have a large hand so a mouse that expands to fit my needs is very welcomed.
I'm getting a Razer Deathadder; along with one of their keyboards and mousepads.