Can same virus that causes sore throat, cough with mucus also cause diarehea and disturb stomach.

Yes - definitely: Many viruses that I know can cause respiratory and GI symptoms. The biggest question is 'how sick' you are and can you fight through it? For any concerns, it's best to see a doctor and get a definitive diagnosis. The Middle East is affected by MERS, as I'm sure you know, and this would be important to rule out. Influenza, adenovirus, enteroviruses, plus a host of others are on my list. Take care.