Suggest Treatment For Cold, Blocked Nose, Stomach Pain And Nausea

Hi, I m a female! I started to come down with a cold yesterday. And today I fell really stuffy again. My stomach started hurting really bad and I felt like I had to throw up. I try to just use the bathroom when I feel like that, so I sat on the toilet, and a lot of liquid came out, but it was blood. I am now freaking out!!