stomachache

I have a stomachache since this morning. I think that I had eaten many foods and drank too much yesterday. When I waked up,I hoped that today would be holiday. But I had to work and I gave up staying at my home. Then I went to my office. But the stomachache became stronger than before. Finally I decided to leave my office and go back to home. I said to my boss that I would like to go back to home because of stomachache. I managed to arrive at my home and took a rest. I'm going to take a rest tomorrow.