Am i having withdrawal symptoms from Clonazepam (Klonipin)?!

I had been on clonazepam since the last week in february taking 2 pills a day every 12 hours, and i had just attempted suicide about 2 weeks ago, taking 3 bottles of nyquil, about 13 sleeping pills, and 6 of my clonazepam pills. I was in the hospital for a week, where i stopped taking my zoloft and clonazepam cold turkey. When i got out of the hospital, they decreased my clonazepam to only 1 pill a day (.5 mg) and increased my zoloft from 50 mg to 100 mg.

Well, i started becoming really irritated after the decrease in the clonazepam, and started becoming more violent and having violent thoughts. Just yesterday, they completely stopped my clonazepam, so i don't take it at all anymore. Also, i have had an upset stomach everyday since i got out of the hospital, usually after me eating, within 20 mins. i am in the bathroom with loose bowels. I also noticed my hands have become really jittery, I have a chest tightness feeling, my heart beats faster and my face twitches when i take my zoloft in the morning (still on it), and i just feel to act impulsively. I also enjoy coffee, and think that could be a factor in how i have been acting. Are these withdrawal symptoms? What should i do?