*Am I going to get the Stomach Virus?

Please help me out, I got 2 hours of sleep last night because I was so paranoid about getting the Stomach Virus. Ok, so my cousins got the stomach virus some days ago, then my uncle got it, then yesterday my aunt got it. I hugged her before she had it bad. She started throwing up later and we went home and I was in the car with her for about an hour. Did not touch her at all after I hugged her earlier. I slept over there. Today I was washing my hands like crazy, drank a lot of OJ, didn't touch anyone, didn't put my fingers in my mouth. I don't feel sick, but my stomach has growled and stuff sometimes today. Am I going to get it? What are the chances? How can I tell?