Do I have the stomach virus or the flu, or what?

I woke up yesterday morning at 2:00 feeling awful,I immediately started vomiting everywhere and I ended up sitting on the toilet vomiting and diarrhea. After like three hours, I went back to bed and slept until 11:00. When I woke up I felt okay again. So I had some yogurt and toast, then went to go meet my friend because we were supposed to go to the amusement park. We went on the ferris wheel and the teacups and I had a hot dog and a large soda. I felt a little queasy and I was feeling a bit like I had to poop. So I told my friend to wait a minute while I went to the port-o-potty. It was like a 3 minute walk from where the ferris wheel was and I was walking especially slow because I was starting to feel gross again. I was pouring sweat and farting a lot. About halfway there my stomach churned grossly and I felt so sick I had to run to the port-o-potty. I was like 30 seconds away and my stomach churned again, I threw up in my mouth. I ran to the port-o-potty and got ready to sit down and I had explosive diarrhea everywhere. I spent 20 minutes throwing up and having diarrhea. When I came out I realized that there was a line, and everyone was staring at me, I must have looked horrible and green, because a few kind looking older people asked if I was okay, I said yes and quickly ran out of view of the port-o-potty and started vomiting again. I managed to make it home and call my friend explaining what had happened. Today I woke up feeling gross and dizzy, so I'm pretty much staying in bed all day today, do I have the flu or stomach virus?