I agree with Mimi (as usual)- the more medications you mix together, the worse you are going to feel. I can't take much benedryl or cold medicines because they give me a creepy "buzz" where I feel nauseous, slightly electrified, and my skin crawls in the most unpleasant manner.I can't sleep then!
Do like Mimi said- take your antibiotics and only the ESSENTIAL medicine, go for a walk or take a hot bath, eat some soup or other comforting food, and crawl into bed under warm blankets. Don't take additional medications- medications are not for mix and match! (especially strong ones like muscle relaxants).