I had a hemorrhage in the left Thalamus from very high blood pressure and high levels of stress and had problems either sleeping for 26-20 hours or staying awake for 30-40 hours and venlafaxine and bupropion has been what keeps my circadian cycle normal, I had not skip a day of those meds in over a year and in only 2 days I have dizzy spells everything I move my head and when I stand up I get nauseated and vomit, are those the side effects from abruptly stopping those medications?