Has anyone taking Macrobid ever had bad pain in your chest and throat. No swelling or trouble breathing just these weird pains in throat and chest. Taking it for a very severe UTI . I also get a bad pain in the left upper side of my back. I was on another antibiotic for ten days which didn't help at all and gave me a yeast infection. Dr sent me for UA at the hospital and has put me on Macrobid 2 x day 100 mg and also baclofen one pill for 5 days. I don't know if I should call the emergency room . It's the weekend and I am a little scared when I have these pains. It also feels worse when I lay down. I was really sick with this UTI worse I've ever had. Since 1st antibiotic didn't work I really need to take this. It is helping