Hopefully it's just the good old flu and not the Covid. You'll know tomorrow and I know the anxiety is getting to you, but you need to try to get as much rest as you can and stay as calm as possible. If you have it, you've already started self isolating and will do what is necessary to get better. If you don't, you can then breathe a sign of relief and figure it might be the flu. I am praying that it's just the flu.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.