Medication

I have sarcodosis and have had times Ive needed to take this antibiotic. I have been on methadone for 12 years. I noticed my paperwork said they should not be taken together. There are other meds that I run into with this but its usually nothing that ends up effecting me. Iam not getting much sleep but feel so tired its unreal. I only have 2 days left on my azithromycin pack. What things should of been told to me about these 2 drogs together. I felt like I was going thru withdraws yesterday after work and I take both meds together in the am before work. Could u please let me know this could be why Ive been so tired and feeling not myself. I just moved back to this state and my Doctor retired over the 5 years I was gone so I was just in the need to astablish a new Doctor in the area and while I was there he said I was sick. Had a temp of 102 and my lymph nodes were swollen, which I already knew but marked it up to being my sarcoid flaring up. Usually I take steroid treatment and Im all better for a while. Any indications of the possibility of these 2 meds. Ive mentioned making a person feel this way?