urinary tract infection
"I am currently on day 2 of macrobid, 2x daily for 5 days. Pharmacist was sure to emphasize to take macrobid with food to prevent nausea. So far, I have no nausea, but have developed a terrible headache. I must say, that pain of the UTI was gone within two hours of taking my first dose, which is worth it to me. So I'll be sticking this one out and hope the headache doesn't worsen."