How To Treat Abdominal Pain,dizziness And Blood In Urine Post Appendectomy?

Hi I had appendectomy 5weeks ago, this last week have gone down hill feeling sick, had temp, dizziness bloated swollen stomache pain all around and tenderness. Had bloods and urine checked came back with dehydration slight protein in my liver also had X-ray he said looked like I wAs constipated but have been having stools. Got sent home with antibiotics how long til I should feel abit better as felt worse!!??