Antibiotics can be tough. Immune dysfunction causing opportunistic infections is seen in ME-ICC. You may be in the subset of patients that fit the International Consensus Criteria for ME & have that issue. Screening for ME is explained in this primer.

https://drive.google.com/file/d/1A0Bvtl4xRUkP3fEJSGMujdPaqQ1-QCIE/view?usp=drivesdk