Review Question - QID 213789

A 21-year-old G1P0 woman presents to the clinic complaining of burning with urination for the past 2 days. She has not taken her temperature at home because she does not have a thermometer but notes that she has felt warm and feverish at moments throughout the day. She says that she has also noticed vaginal discharge that is yellow in color. She has remained sexually active during her pregnancy and does not use condoms. She has a history of multiple urinary tract infections, which have previously been successfully treated with antibiotics. Histology from a urethral swab shows cytoplasmic inclusions on a fluorescent antibody-stained smear. Urinalysis is significant for positive leukocyte esterase and increased white blood cell count. Which of the following treatments is most appropriate for this patient?