My mouse stinks!

Right now, my brand new mouse is givng me brand new headache. This is supposed to be brand new and it sucked big time.
Its giving me a hard time to draw and finish my documents.
I need to get a new one before i get carpal-tunnel and before my trackball gets broken.
Can u lend me a mouse instead? ung heavy duty kahit 2nd hand.
Ill give it back by christmas.
promise.