I have had stomach ache for 3 days now. Very...

What is the treatment of Stomach pain ?
Treatment of Stomach pain depends on the cause of your symptoms such as reflux or Gerd ot Irritable bowel syndrome so you need to do few tests in the nearest medical center for clinical assessment and your doctor will prescribe medications such as such as Antispasmodic such as Visceralgine to relieve abdominal colic and Proton pumb inhibitors such as Nexium20 twice daily for 14 days and other medications for burning sesnation and gastritis such as the triple therapy for 14 weeks .
What are the causes of Stomach pain ?
There are many causes for Stomach pain , which include

• Gastritis 
• Reflux 
• GERD
• Irritable bowel syndrome
• H-pylori infection
• Colon disease
• Infection
• Tumors .
• Other causes

What are the tests needed for Stomach pain ?
Clinical assessment In the nearest medical center as your doctor will perform Stool Analysis for H-Pylori Infction and Ultrasound for other causes such as Hernia . Sometimes your doctor will perform Other tests such as endoscope for other causes such as Colonic disease .
What to do at the moment ?
You have to do clinical assessment in the nearest medical center .