Antibiotics side effects and recovery time

Patient: Hi, I am curious how long it takes for side effects to go away after taking amoxicillin? I stopped taking it Monday night with my doctors permission after experiencing flu-like symptoms (fever, nausea, loss of appetite, fatigue, insomnia) and was sick with these symptoms for about 2 days after. I’ve gotten a lot better, but still randomly experiencing nausea and my appetite is up and down. I still haven’t been sleeping as well as I normally do.

Symptoms: Fever, nausea, loss of appetite, fatigue, insomnia