I can only Right Click

About 2 weeks ago my computer begin to only right click. At first i tired to turn off all controls that would enable it to right click such as the command button and the right click feature on the track pad neither or which worked. In frustration i pounded on the control key a couple time and it started working normally again for about 4 days but now its doing it again and unfortuantly pounding on the control key isnt helping t his time. Additionally i also turned off the bluetooth after reading a thread on here about someone with a similar problem but that did not help either. Also it doesnt start only right clicking right away. Usually after about 2 or 3 min after i have booted up the computer it begins to only right click eliminating my ability to use the keyboard along with other features such as the power button and my ability to scroll in certain windows. Any ideas?