Confused mind symptoms and conditions

began talking biaxin for bronchitis. 500mg 2 times daily. 1st day pains in my stomach. 2nd day extreme fatigue walking across the room seemed overwhelming. by eve. very depressed.confused mind. night sweats, nightmares never felt this bad in my life. stopped taking on the 3rd day.after 24hrs still felt horrible. so I took activated chacoal 2 caps 2 times a day. By day 3 my mind felt like mine again and my energy is back.only problem is I'm not over the resp. infection but i will never take biaxin again.