I've halved my dose for the last 10 days from 20mg (been on for 18months) to 10mg. I'm feeling like I did before I took anything at all, like I'm ready to scream because everything is irritating me so, so much. At night I've been waking up and heart starts beating really fast and I start panicking slightly. These are feelings I had before I started the medication at all. Should I just go back to the 20mg? Am I ready to come off them, will I ever be ready to come off them? Is this just normal feelings when you come off?