My almost 10 years old son complaining of headache since 2 days ,dizziness and low grade fever 99.4f,history of single kidney other kidney on stage 2 as nephrologist did some testing ,on lisinopril,B/P 85/60 yesterday and today ,gave him nasonex,advair inhalor as prescribed ,has constipated stool day before yesterday on miralax since that day .should i go to PCP ?