Fever and chills

Hey everyone. I was itching a lot more than my normal two weeks ago and my doctor put me on the drink powder RX- sorry I can’t remember the name. It seemed to be working well up until the last day or two. I started itching more again and today I started feeling nauseous and having chills. I also just took my temp and I have a low grade fever. My urine is also really yellow, despite that I drink quite a bit of water. Anyone else experience things like this while on the med? I’m just not sure if I need to make a visit to the ER? :frowning: