I reported to my llmd that after 11 weeks of antibiotics I have gained weight and frequently feel bloated to an extent that my heart/chest feels pressure, hard to breathe. She said other of her patients had reported the same but that she was unaware of that being a side effect. So I was wondering if anyone here treating lyme and co with antibiotics have this experience? I have been taking septra ( bactrim?) and azithromycin. I am distressed over this gain and the bloated pressure.