I've Just Recently Started Having Normal Dreams And Some Are

I've just recently started having normal dreams and some are a little odd but I've been having a lot of trouble sleeping at night and in my dreams im dizzy and when I wake up I feel dizzy and out of it for a few hours. I've had problems with my teeth so I've been taking ibpruofen and an antibiotic but I didn't think that would cause it. What could be causing such a drastic change in my health?