Marky74

Please can anyone advise or anyone else had this issue. I recently was playing Search and Destroy. A match I joined I had no weapon and there was instructions on the screen. I quickly left this game then my emblem suddenly changed to a one I havent unloccked. Now any game I play I have a laser sight on my weapon and have a small black square and text on the right side of the screen. What is going on????????
Also there are people getting nukes after only afew kills- anyone explain whats going on.