Since you have an intrauterine device
in situ, you should get explored for its position as the pain could be related to its displacement. An MRI
and a sonogram of the pelvis are very helpful. Now-a-days, such lengthy antibiotic courses are not prescribed, more so in view of the side effects. Please take a second opinion
. You will need a swab test ideally before concluding on the diagnosis of infection. Further management can be planned after the location of the coil is seen and infection detected. Hope you find this information useful. Take care.