Well I can tell you this much a few months ago my mom had to the stomache bug and the night before she vomited I remember saying Omg my mom hasn't vomit in so so long. Next morning wake up and go get a drink and my grandmother goes Erin you throw up in the bathroom lastnight and I'm like no why she's like well someone did and I cleaned this morning I thought maybe my sister got alittle drunk and puked, well no it was my mom she was lying on the couch and she goes it's from me! I was like what did you drink to much and she's like no I have a stomache bug, how weird is that, thinking the night before how she hadn't threw up in so long, so the next 3 days I was on alert mode and stayed far away her, well one morning I started to feel weird and I was freaking out cause I thought I was getting sick with it, so I had the nausea and a lump in my throat and honest to god I swear I was sick, every few mins I felt like throwing up and I was panicing and I was walking around pacing in my house and everytime I sat down I'd feel so gross, and I kept thinking this is the real thing, I was so tired from being up the night before all I wanted to do was sleep but I couldn't calm down. Well I finally figured out it was all in my head and I wasn't really sick, the symptoms were so real I worked myself up so much i couldn't tell if it was real or not. I finally fell asleep and woke up fine. Your brain does this to you makes you think it's the real thing but it isn't! But anyways what helps with my nausea alot fo the times is soda, it brings all the air out of my stomache and then I burp and I do feel better, and not only that but walking around like outside or something is another thing that helps, and also when I have nausea I'll take alittle benadryl and it helps alot it's an anti nausea med not only allergy. Relaxing is the best thing you can do though you have find relaxing techiques like yoga or even exercising.Everytime I get the panic attacks I tell myself it will pass it's only anxiety it's not going to hurt me or make me vomit, you have to think positive in these situation cause negitive makes it so much worse. Please take care!