<prompt> DOC for Chlamydia trachomatis in pregnancyAmoxicillinMetronidazoleCephazolinClindamycin  <response>: Chlamydial infections during pregnancyThe first line of treatment is erythromycin base 500mg orally, four times a day for 7 days, or amoxicillin 500mg orally three times a day for 7days. Azithromycin is an alternative; it is safe in pregnancy.Refer: Mudaliar and Menon;s Clinical Obstetrics, 11th edition, pg no: 253 