Yesterday afternoon, I think I had food poisoning. I started getting cramps/pain in the lower abdomen. I wasn t able to defecate. I began sweating. I threw up once and continued to have pains. In the evening, when I was finally able to deficate, I started bleeding from the rectum. The blood was light red and watery. Today I am still bleeding. The bleeding only occurs when I try to deficate. What should I do? What should I eat? Do I need to be concerned?
Hi. You need to be concerned as this is a cause of concern. The probable cause of your symptoms is gastroenteritis, colitis being severe enough to cause the bleeding you have.  I would suggest you the following