My daughter, age 22, was taking Macrobid for a UTI for the last 4 days. She woke up today with a swollen hand and lip, and hives. She went to pharmacy and took Benadryl. Then went to university health center where they gave her a steroid shot and a prescription. Swelling is better, but she said she feels weak and her body hurts. Please advise. Should she go to er?