I got some of the normal flu stuff with beta, but other than that, I found it to be a tolerable drug, until...they did my liver enzyme tests LFT its called. I set a clinic record. I didnt feel that bad actually, and it surprised us that it could be that high and not have many sx.
The Liver itself can take quite a hit. it can be more than 80% gone and still work enough to take care of your needs. Are the whites of your eyes yellow? is your skin tinged yellow? Those are usually pretty late signs of your liver not being able to clear all the waste out. A quick blood test would let them know. Perhaps they should throw in a blood count to be sure your red cells, and white cells are all happy too.
I hope you feel better.