You may have the symptoms of Dyspepsia . Yes Gastritis can cause it as well as other conditions such as eatng fatty , greasy, spicy foods , smoking , alcohol consumption , medications. For more informayion about Dyspepsia please click the link below:
http://www.nlm.nih.gov/medlineplus/ency/article/003260.htm
Please click the green accept button if my answer is helpful to you. A positive feedback rating and a bonus would be encouraging. If you have any further questions please feel free to ask. Take care , Dr.Yetimyan.