What Is The Right Treatment For Bartholin's Cyst ?

Im 28 y/o, i had a bartholin cyst since i was 27, before i had sexual intercourse . I was evaluated by a GYN and she gave me a Fluroquinolones that did not work. after 4 months married the cyst became larger, i went to an OBGYN he placed a needle and got a sample of the fluid, which was not an abcess but normal. Secretion culture came + for Klebsiella pneumonia . he 1st started tx w/ cipro for 5days which did not worked, then w 1st gen cephalosporins for 7days, cyst is the same. I went back to the OBGYN & he told me to start w a doxycicline therapy for 10days, instead of going for a 3rd generation cephalosporins or increasing the days of tx to 14-21 days!! What should i do? Should i seek for another doctor, or follow his recommendations?? please help, im a Medical student & i know the Tetracyclines are very strong w/ some serious side effects!