Hello, welcome to Justanswer, I will try to assist you with your medical question, and any medical information you seek
If you have pus, you need to see your doctor, it may need antibiotics, and also the nail may need to be removed partially
Peroxide is good to use
If you had a reaction to the amoxicillin then you may use clarithromycin instead
can the partial removal of the nail be done in most doctor offices or do I need to go to the ER or see a podiatrist?
Also, should I soak in saltwater? I am currently soaking in soapy water (using dial soap).