Hey I got something quite similar to you, and around the same time too. On november 28 I woke up with really terrible diarrhea and vomiting, which lasted about 48 hours. Then I noticed I had blood in my stool. The rest of the week I was having loose stools with blood in it, plus I was having shaking and no appitite. It lasted over 10 days. I went to the doctor, and he said I had some sort of virus. I had a stool test, which came out negative. I have no idea what it was, or if i'm completely over it. I haven't noticed any more blood in my stool though. I think the virus may have caused a sore or something in the colon, which may be the reason why there was blood in the stool.