What Causes Pain In Chest And Abdomen?

Hi. Yesterday morning I felt chest pains, it wasn t severe but it doesn t feel comfortable. The night before that I played a bit of football (soccer) and had pain on my right side of my stomach. I thought it was normal and it went away. After the football I didn t sleep the night and at 6 am I started feeling chest pains, from coughing, and then burping, and finally had pain with walking as well. I did some research and I think it could be agina. And now again I feel the pain. I did have a year ago but it went away after I slept but this time its two days in a row. Is there anyway to help treat this, I m quite scared. Thanks