I second what paxiled said. You are experiencing a withdrawal syndrome, which, for most meds like these, can be quite significant. To make matters worse, you stopped taking TWO meds abruptly.
You need to consult with the prescribing doctor ASAP. Most likely...you will have to go back to your most recent dosage, then taper gradually. Unfortunately, that will probably cause even worse symptpms for a short duration, but in the long run, it will ease the symptoms for you.