You got this! Try your best not to think so much about the vaccine itself but try your best to get comfortable. I have an inflammatory autoimmune disease and chronic lyme so I feel all sorts of painful things. Dizziness and nausea are new for me but I've found its hard to pinpoint the cause for either. I think recently it's caused by cervical vertigo for me. I know you've probably heard this a ton, but what I eat impacts my day a lot. I do best in my worst moments with mostly fruit and veggie smoothies, steamed veggies, and white fish. I also need to spend as much time outside as possible. Cbd helps mostly mentally. Talk to anyone you can but try not to dwell on the negative- Be open to distractions and different topics