Can't Place Blocks in Minecraft Only Destroy even when I Use right click and left?

Help When I played minecraft today I right clicked it to place a block but it destroyed it so then I went options and changed it button 2 and still doesn't work I can only destroy blocks left and right click please help

Go to options and click something that might say "controls" and set it to Mouse 1 for left side of mouse if you want that to place a block and Mouse 2 for the right side to destroy

It is probably your mouse (The "things" may be stuck together) Make sure you only press right click when placing a block, not left and right at the same time. Other then that try restarting Minecraft and testing your left click on something else.