I'm not sure if I had food poisoning or a stomach virus?

About 4 days ago, I started getting pains in my stomach after I would eat. It felt like gas pains. On the 4th day, I went to a restaurant & ate salad and a bowl of minestrone soup for lunch. I felt some pain after that. Then I ordered Tai food (garlic shrimp) for dinner. The pain started again and became more severe throughout the night. The pain was constant & it kept me up half the night. I woke up to go to work and I couldn't get myself together because the pain was severe and I also became nauseus. I tried to vomit and nothing would come up, only a little saliva. I tried pepto bismol and I just vomited that up. Throughout the day I kept running to the bathroom to vomit. My stomach lining feels very bloated and painful to the touch. It's the second day and the constant pain subsided, but I still have the bloated soreness in my stomach. I'm able to eat, but this pain is annoying. I never had diarrhea or anything. Does anyone know what this could be?