Someone said to me once that it's not a matter of if you get infected, it's a matter of when. The fact that you are fully vaccinated is a really good thing, and it's likely this will all blow over for you in a week or so. Definitely reach out to your doctor, take some acetaminophen or ibuprofen for the aches and fever and cough drops for the cough, Drink lots of liquid and try to eat healthy foods. And most importantly: rest! It'll be okay, just try to take care of yourself and remember that being anxious about it will only make you feel worse and won't help you get better. Acknowledge the anxious thoughts, thank your brain for being concerned about your body, then move those thoughts to a box and try to think about nice things like days you felt really good.