I was diagnosed with ureaplasma parvum. I was prescribed doxycycline for 2 weeks but the symptoms persisted. The doctor gave me 1 gr of Azythromicin as a single dose. I repeated the test 3 days after I took the antibiotic and it came negative but I still feel the infection is not gone. Is it possible to get false negative result because of the antibiotic? The doctor told me that PCR is a very accurate but I have my doubts. And if treatment fails with doxycycline and Azithromicin is there another antibiotic that can cure ureaplasma?