is it advisable to take more water while having a...

is it wrong to drink water in case of appendicites ?
no its not , but you should check with your doctor to assist your medical condition and if you need surgery soon , as most cases of appendicites treated with antibiotics , but if the medical condition keep worsening , sugery will be needed , and in that case , eating or drink is stopped before 8 hours of the surgery at least 
What are the used antibiotics to treat appendicitis?
1. amoxicillin + clavulanic acid
2. Cefotaxime
3. Fluoroquinolone
4. Metronidazole
5. Tinidazole
What is the treatment for appendicites if the antibiotics isnt working :
1. consult surgery doctor first to do the needed tests 
3. After that, appendectomy must be performed
4. Often the patient needs approximately 2-4 weeks
5. Antibiotics will be also prescribed after surgery 
Complications and symptoms of appendicites:
1. Abdominal pain and chronic pain episodes
2. may be accompanied by vomiting and nausea
3. Severe infections in the appendix and may spread to other areas of the intestine
4. Severe loss of appetite